Algebra

Can someone check my algebra answers and help me with the problems I don't understand?

1. n^2-n-20/2n^2 times n^2+5n/n^2-25
answer: n+4/2n

2. (2x-6/21)/(5x-15/12)
answer: 8/35

3. 5x-3/6 - x+3/6
answer: 2x/3-1

4. 5x/26 - 2x/13
answer: 1x/26

5. 3x^2/9x^5
answer: 1/3x^3

6. (x^2+2x-15/4x^2)/(x^2-25/2x-10...
answer: I'm not to sure but i think its x-3/2x^2

7. x+2/x/x-2/3x
answer: 3(x+2)/x-2

8. What values for x must be excluded in the following fraction?
9/x-8
answer: 8

9. x-13/x^2-x-12 + 3x-3/x^2-x-12
answer: 4/x+3

Sometimes it helps to use parentheses when typing these kinds of problems online. From what I can determine, these answers look correct, except for #3. (For #4, you can just state the answer as x/26.)

Here's #3 worked out:

(5x-3)/6 - (x+3)/6 =

(5x-3-x-3)/6 =

(4x-6)/6 =

2(2x-3)/6 =

(2x-3)/3

I hope this will help.

  1. 👍
  2. 👎
  3. 👁

Respond to this Question

First Name

Your Response

Similar Questions

  1. math

    the sum of a number and 3 times that number is 76. what is that number? PLEASE HELP ME I DON'T GET IT!!!!!!!! Mathematics is a language, so translate the English into "math" let the number be x "the sum of a number and 3 times

  2. Precalc/Trig

    I don't understand how to do these problems: Find two pairs of polar coordinates for each point with the given rectangular coordinates if 0 ≤ θ ≤ 2π. Round to the nearest hundredth, if necessary. 17. (2, -3) Answers: (3.61,

  3. Algebra

    I have a few questions that I need help with. Solve the radical equation, and check all proposed solutions. 5. x- square root 3x-2=4 I don't understand this problem. Solve and check the equation. 10. (x^2+14x+49)^3/4-20=7 would I

  4. math

    Please check my answers for Algebra 1B Unit 2 lesson 9 Exponents and Exponential Functions Unit Test My Answers: C D D A A B C B A C A B C B B C yes yes C A D A D B

  1. Algebra II

    Solve x^4 - 12x - 5 = 0 given that -1 + 2i is a root. I’ve used synthetic division to get the answers x = 1 +/- 2i , 1 +/- sqrt 2 I’ve having trouble checking the answers though because of that imaginary number. How can I

  2. Math

    I'm using the quadratic equation and I understand how to use it, but the format my text book gives the answers in is what I don't understand. If I have (2+/-Sqrt(8))/2 I know that x can either equal 2.41 or -0.14 However, my

  3. Math

    I am having a lot of problems in math right now. I am doing practice problems right now and I don't even understand them. I don't really understand it and I do online school. Any help would be appreciated. 1. What is the simplest

  4. To Troyer 0269

    I deleted your last science post, as I promised I would a couple of weeks ago. You posted five questions that I'm sure you could answer by reading your text. As you know, we don't give answers, but help students with problems they

  1. English

    I'm worried about my math. 1. Why don't you buy a math self- teaching book and solve math problems a lot. 2. Why don't you buy a math self-study book and solve math problems a lot. 3. Why don't you go to a math academy and study

  2. statistics-PLEASE HELP quick

    I understand most of the formulas however Im not sure what the answers tell me. I did a frequency distribution table for all points scored by a football team over 4 years, but I don't understand what my answers mean and I don't

  3. math

    from the looks of things I am in good company when it comes to having problems solving algebra equations. I hope you can help with this one I have been working on for two days and still don't understand. I need ordered pairs for

  4. English

    Now, let's check how well you can use the expressions you've learned. I will distribute handouts. You have to solve the problems. Are you finished? Then, I'll check the answers. Look at the answers on the blackboard. Check your

You can view more similar questions or ask a new question.