2.What must be added to 6 to make it 18 ?
A.2 B.4 C.6 D.8

3.What is the solution of x+2=17
A. 19 B. 15 C. -15 D. -19

4.What is the solution of 28 - x = 20?
A.12 B.14 C.16 D.18

5.What must be added to both sides of the equation: x - 12 = 15 to isolate the variable?
A. -15 B. -12 C. 12 D. 15

6.What must be the difference it twenty and eight?
A.10 B.12 C.14 D.16

7.What is the three times a number increased by six is 21?
A.5 B.6 C.8 D.12

8.If x = 2 , which of the following equation is correct?
A.2x - 1 = 3 B.2x + 5 = 11
C.3x - 6 = 9 D.3x + 6 = 12

9.Which property of equality should be used to isolate the variable in the equation 7x = 63?
A.addition B.division
C.multiplication D.Subtraction

10.Which of the following is the solution set of the equation 8x + 12 = 5x - 21?
A. -11 B. -6 C. 3 D. 10

11.What is the solution set of 4(x + 2) 8 = 80?
A.8 B.10 C.16 D.20

12.Which of the following can be used as a replacement for b and 6b - 24 = 2b + 48 ?
A.6 B.12 C.18 D.24

13.If x=2, which of the following equation is correct?
A.2x - 1 = 3 B.2x + 5 = 11
C.2x - 6 = 9 D.2x + 6 = 12

14.If x = 3, which of the following equation is correct?
A.2x - 5 = 5 B.2x + 5 = 11
C.3x - 6 = 9 D.3x + 6 = 12

15.Which step should you take to solve the equation x - 11 = 45?
A.add 11 to each side
B.add 45 to each side
C.subtract 11 from each side
D.subtract 45 from each side
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