Solving Equations

Question 1:

x4=666x
x =10

Question 2:

10x5=94+x
x =11

Question 3:

9x+2=66+x
x =8

Question 4:

x+9=39+7x
x =-5

Question 5:

6x6=22x
x =1

Question 6:

2x+7=519x
x =4