Question

Lan needs to solve 23 = y + 40. What is the step that shows the inverse operation needed to solve this equation. Find the value of y.

Y=

Answer 1

-26? I’m not really sure but (-26)+40= 23

Answer 2

y=17

Explanation:

We move all terms to the left:

23-(y+40.)=0

We add all the numbers together, and all the variables

-(y+40)+23=0

We get rid of parentheses

-y-40+23=0

We add all the numbers together, and all the variables

-1y-17=0

We move all terms containing y to the left, all other terms to the right

-y=17

y=17/-1

y=-17