Question

If A = -3n + 2, and B = 5n - 7, what is the value of A + B, in simplest form?

2 n - 5
-8 n - 5
-3 n
2 n + 9

Answer 1

2n-5

Explanation:

to solve this problem, you would have to add (-3n+2)+(5n-7). -3n+5n=2n and 2+(-7)=-5. Therefore, A+B=2n-5.

Answer 2

2n - 5

Explanation:

Pre-Solving

We are given that A is -3n + 2 and B is 5n - 7.

We want to find the value of A + B in its simplest form

Finding it in its simplest form means we combine all of the like terms together.

Solving

We can replace A with -3n + 2 and B with 5n -7

A + B => -3n + 2 + 5n - 7

Combine the terms with n together.

-3n + 5n = 2n

Combine the numbers together.

2 - 7 = -5

Now, add 2n and -5 together.

2n + -5

This can be simplified to be:

2n - 5

This expression can't be simplified anymore, so this means that 2n - 5 is its simplest form.