How do you solve -( - n + 7) = 25- 3n?

1 Answer
Jun 9, 2018

n=8

Explanation:

First, distribute the negative sign (it flips the existing sign)
n-7=25-3n

Add 7 to both sides
n=32-3n

Add 3n to both sides
4n=32

Divide both sides by 4
n=8

The key is to use the INVERSE operation (ex: addition/subtraction, multiplication/division)