Solving Equations with Brackets

Question 1:

12x9=24
x =11

Question 2:

9x10=-9
x =9

Question 3:

6x7=-18
x =4

Question 4:

25x+9=88
x =7

Question 5:

8x10=16
x =12

Question 6:

32x+3=45
x =6