How do you solve 128=8(8n+8)?

1 Answer
Nov 5, 2017

n=1

Explanation:

Distribute 8(8n+8) first.
128=8(8n+8)
128=(88n)+(88)
128=64n64
Then add 64 to both sides of the equation.
128+64=64n64+64
64=64n
Now, divide both sides with -64.
6464=64n64
1=n
So the answer is n=1.

The rule for these kinds of equations is first, you have to simplify each individual side of the equation. Then, when you are simplifying both sides together, you can use PEMDAS without Parenthesis (Exponents, Multiplication, Division, Addition, and Subtraction) except you do it backwards, so you would start simplifying addition and subtraction first.