Question

How do you solve `3x + 5 = 2 ( x + 7 )`?

Answer 1

Work backwards to solve for x

Explanation:

To find something that is lost work backwards to find what is lost.

The order of operations backwards is PESADM

Think about like this. " if you lose something in PE you are a SAD M(an)(am)

First remove parenthesis and exponents ( PE) then remove addition and subtraction by doing the opposite. (SA) Then remove multiplication and division by doing the opposite.

First remove parenthesis

`2( x +7) = 2x + 14` so

`3x + 5 = 2x + 14` Remove the +5 by adding the opposite -5

`3x + 5 -5 = 2x + 14 -5` This gives

`3x = 2x +9` Remove the 2x by adding the opposite -2x

`3x -2x = 2x -2x +9` This gives

`x =9`