Solving Equations with Brackets

Question 1:

12x+4=168
x =10

Question 2:

42x+9=84
x =6

Question 3:

7x+12=112
x =4

Question 4:

8x7=-32
x =3

Question 5:

5x+8=70
x =6

Question 6:

11x10=-55
x =5