Question

4h+8=20 what is h?..........

Answer 1

4h + 8 = 20 Subtract 8 from each side 4h = 12 Divide each side by 4 h = 3

Answer 2

I believe it's 3 because 4 times 3 equals 12 and 12 plus 8 equals 20! 
4(3)+8=20

Hoped this helped! :)