Which of the following are equivalent to 9h+9 (2h) ? h (9+18) or 9h+17h

We have to first distribute the 9 inside of the parentheses

so 9*2h=18h

So the equation in 18h+9h

if we look at the first equations, h (9+18) and distribute the h then the equation becomes

9h+18h

so h (9+18) is equivalent to

9h+9 (2h)