Answer:
y=17
Step-by-step 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
