Math

posted by .

Show me how to solve problems like this.
1.) 7 + (-9) + (-5) + 6

2.) [(-3)(-4)(-5)]/ (-2)(-3)]

Try reading the following sites' pages very carefully. Then make an attempt at doing the problem, and we'll see if you got it right:

http://www.jiskha.com/mathematics/algebra/distribution.html

(Broken Link Removed)

http://www.softmath.com/tutorials2/multiplying-dividing-adding-subtracting-integers.html

I will explain it simply okay. Searching sites is a waste of time.
-Subtracting Real Numbers-
If a and b are real number then a - b is = to a + (-b)
The paretheses indicate that number stays negative.
so: Step one
7+(-9)+(-5)+6 :: add negative 9 and 7, which translates to 7+(-9) or 7-9
7+(-9)= -2
-9+7 = -2
7 - 9 = -2
"you following?"
Step two
(-2) + (-5):: when you add two negatives the answer is negative.
-2 + -5 = -7
Step Three
(-7)+6 or 6-7
= -1
In tree form
7+(-9)+(-5)+6
(-2)+(-5)+6
(-7)+6
= -1
Problem # two
-Multiplying and Dividing Real Numbers-
*pointers*
-Multiplication of real numbers is just like whole numbers. Only you have to determine if the answer is negative or positive.
-when you mulitply two negatives together you get a positive answer.
-when you mulitply a positive and a negative you get negative answer.
- Brackets [ ] those things, indicate that the equation inside of the bracket is done first in the order of operations.
- when parentheses and/or brackets are next to each other without a sign it means to multiply.
So: Step one, remove the brackets by doing the equation inside.
Here is the tree
[(-3)(-4)(-5)](-2)(-3)]
[(-12)(-5)](-2)(-3)]
[(-60)](-2)(-3)]
[(-60)]6]
(-360)
-Step two was perform the operation outside of the bracket. (-2)(-3)=6
[(-60)]6]
now multiply
= (-360)

I hope I helped.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. statistics

    In the past, 44% of those taking a public accounting qualifying exam have passed the exam on their first try, Lately, the availability of exam preparation books and tutoring sessions may have improved the likelihood of and individual's …
  2. Math

    I am having problems understanding how to solve problems like the following: a2 + b2 = c2 Please help me where I can understand solving problems such as the one above.
  3. college chemistry - molarity question

    My textbook doesn't show me how to do problems like the following, and I'm having a hard time finding similar problems online. Most of the molarity problems I'm finding involve mixing a substance with water, but these involve mixing …
  4. English

    It is very rude of you to behave like that. It is very wise of you to answer the question. It is very stupid of you not to solve the math problems. It is smart of you to solve the math problems. It is careless of you to hit the jar …
  5. math

    Here are a few problems I need solving Make sure to show a check for the solution and write the solution in set notation like {x|x>5}: Solve for y -7y-14>42 Solve for x -2(4x+5) < 2x-20
  6. algebra 1

    Can someone please help me with this inequality problem -3-8>(4x+8)-8 I have no idea how to solve this problem but I would like to learn. Can you be kind to show me the steps so that I can use this as an example problem for other …
  7. Trigonometry (Logarthims)

    Give checks to the following two questions Use logarithms and the law of tangents to solve the triangle ABC, given that a=21.46 ft, b=46.28 ft, and C=32°28'30" without logarithms i can do this problem easily and i have. but when i …
  8. Algebra II

    Right now we're doing systems of Linear Equations in Three Variables. It says to solve the following system: x - y + 3z = 4 x + 2y - z = -3 4x + 3y + 2z = -5 Whatever I try with this problem (and the others like it) it comes out wrong. …
  9. Math

    Four classmates are comparing the number of pages that they have read in a novel assigned for their language-arts class. Ken has read twice as many pages as Jenny. Alicia has read 18 pages more than Jenny and 11 pages more than Mark. …
  10. Math

    This needs to be worked backwards. Four classmates are comparing the number of pages that they have read in a novel assigned for their language-arts class. Ken has read twice as many pages as Jenny. Alicia has read 18 pages more than …

More Similar Questions