Question

3b – 7 < 32

Answer 1

how do i know if i need to subtract each side or add each side

Answer 2

ok so you see in this expression, 3b – 7 < 32 , right?

Answer 3

then ur goal is always to isolate the variable, in this case b.

Answer 4

so to accomplish this you have to move the constant, -7 to the other side.
to do this you have to add +7 on both sides just like i did.

Answer 5

get it now?
:)