Solving Equations

Question 1:

3x10=8x40
x =6

Question 2:

9x+7=10x0
x =7

Question 3:

4x+8=x+44
x =12

Question 4:

10x+9=5x+34
x =5

Question 5:

3x+2=10x75
x =11

Question 6:

8x8=4x+4
x =3