Combine y+3 with 5y-7
Y+3=5y-7
Subtract 3 to both sides
Y=5y-10
Subtract 5y to both sides
-4y=10
Divide -4 to both sides
Y=-25
a store sells y+3 boxes of pencils. each box has 5y-7 pencils. how many pencils does the store sell?
1 answer