Solving Equations

Question 1:

10x+10=40
x =3

Question 2:

9x9=81
x =10

Question 3:

5x+6=46
x =8

Question 4:

6+5x=36
x =6

Question 5:

76=6x+4
x =12

Question 6:

-1=2x9
x =4