Posted by **Jon** on Sunday, February 24, 2008 at 1:53pm.

1)The sum of a number and 17 more than twice the same number is 101. Find the number.

17+2n=101

17-17

101-17

2n=84

n=42(answer)

2)Evaluate: 5-/a+5b/ if a=-12 and b=2.

5-/-12+5(2)/

5-/-12+10/

5-/-2/

5-2

3(answer)

- Math -
**Quidditch**, Sunday, February 24, 2008 at 2:10pm
1. The sum of a number and 17 more than twice the same number is 101 should be:

n + (2n+17) = 101

- Math -
**blueridge**, Sunday, February 24, 2008 at 2:22pm
Yes, I totally missed some of the wording.

Yes, Quidditch is right for question 1.

Good looking out, Quidditch!

blueridge

- Math -
**Quidditch**, Sunday, February 24, 2008 at 2:18pm
2. I am not sure what

5-/-2/

means.

If / is supposed to be a bracket or parenthesis then:

5-[-2]

=5+2

- Math -
**blueridge**, Sunday, February 24, 2008 at 2:19pm
The equation is set up correctly. Good job!

Let's see:

17 + 2n = 101....Original Equation

Subtract 17 from both sides.

2n = 101 - 17

2n = 84

Now divide both sides by the coefficient 2 to find the value of n.

n = 84/2

n = 42

Is this true?

Let's plug 42 for n in the Original Equation above and simplify. If we get the same answer on both sides, then n = 42 is right.

You developed:

17 + 2n = 101....Original Equation

Let n = 42

17 + 2(42) = 101

17 + 84 = 101

101 = 101...It checks!!!

Yes, n = 42.

=========================

NEXT: You are told to evaluate.

To evaluate means to replace the variables given with the given values and simplify.

Evaluate: 5-/a+5b if a =-12 and

b = 2.

However, I just noticed that you made a typo in terms of 5.

What exactly are you subtracting from 5?

Do you see what I mean?

The second question is not typed correctly.

Write back when you fix the typo.

- Math -
**Quidditch**, Sunday, February 24, 2008 at 2:23pm
Part 1

I don't think you set up the equation correctly. See me first response

## Answer This Question

## Related Questions

- Algebra2 - can somenone please check my answer and if i'm doing it right.... The...
- math - what is the sum of all consecutive numbers from 101 to 200, those two ...
- math - the sum of two number is 39 . twice the first number plus 3 times the ...
- Quantum Physics - Let f:{0,1}^3→{0,1} with f(101)=1 and f(x)=0 for x≠...
- Math - You start with 101 and want to get down to 0 by subtracting 2. How many ...
- Math - For the following data... 1. Provide evidence as to whether this data set...
- Math 8R: Homework Check - Part 4 - Part 4: Translate and solve: 25. 6 less than ...
- Quantum Physics - Let f:{0,1}->{0,1} with f(101)=1 and f(x)=0 for x ≠ ...
- Math - What is the cardinal number for the follwing sets? 1). 101,102,103,104...
- Math - What is the cardinal number for the following sets? A) 101,102,103,104...

More Related Questions