Name
Grade
School

Date
Questions20
Score

1

4n = 20 where n = 5

2

3n = 18 where n = 10

3

4y/5 = 40 where y = 45

4

9s = 36 where s = 9

5

4x = 40 where x = 19

6

y+6 = 12 where y = 6

7

2y+3 = 23 where y = 10

8

s/6 = 7 where s = 42

9

6-p = -3 where p = 9

10

5+b = 7 where b = -2

11

s-8 = -2 where s = 6

12

2a+4 = 20 where a = 8

13

10b = 80 where b = 8

14

4-n = -4 where n = 0

15

3p+5 = 23 where p = -6

16

4z = 36 where z = 9

17

4a = 36 where a = 17

18

8z/7 = 72 where z = 73

19

9-z = 3 where z = 6

20

9q = 72 where q = 8

Answers Key

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1

4n = 20 where n = 5

TrueSolution

4n = 20

Hence the Equation is true

n = 204

n = 5Hence the Equation is true

2

3n = 18 where n = 10

FalseSolution

3n = 18

Hence the Equation is false

n = 183

n = 6Hence the Equation is false

3

4y/5 = 40 where y = 45

FalseSolution

4y = 200

Hence the Equation is false

4y5= 40

4y = 40x54y = 200

y = 2004

y = 50Hence the Equation is false

4

9s = 36 where s = 9

FalseSolution

9s = 36

Hence the Equation is false

s = 369

s = 4Hence the Equation is false

5

4x = 40 where x = 19

FalseSolution

4x = 40

Hence the Equation is false

x = 404

x = 10Hence the Equation is false

6

y+6 = 12 where y = 6

TrueSolution

y+6 = 12

y = 12-6

y = 6

Hence the Equation is true

y = 12-6

y = 6

Hence the Equation is true

7

2y+3 = 23 where y = 10

TrueSolution

2y+3 = 23

2y = 23-3

2y = 20

Hence the Equation is true

2y = 23-3

2y = 20

y = 202

y = 10Hence the Equation is true

8

s/6 = 7 where s = 42

TrueSolution

s = 42

Hence the Equation is true

s6= 7

s = 7x6s = 42

Hence the Equation is true

9

6-p = -3 where p = 9

TrueSolution

6-p = -3

-p = -3-6

-p = -9

p = 9

Hence the Equation is true

-p = -3-6

-p = -9

p = 9

Hence the Equation is true

10

5+b = 7 where b = -2

FalseSolution

5+b = 7

b = 7-5

b = 2

Hence the Equation is false

b = 7-5

b = 2

Hence the Equation is false

11

s-8 = -2 where s = 6

TrueSolution

s-8 = -2

s = -2+8

s = 6

Hence the Equation is true

s = -2+8

s = 6

Hence the Equation is true

12

2a+4 = 20 where a = 8

TrueSolution

2a+4 = 20

2a = 20-4

2a = 16

Hence the Equation is true

2a = 20-4

2a = 16

a = 162

a = 8Hence the Equation is true

13

10b = 80 where b = 8

TrueSolution

10b = 80

Hence the Equation is true

b = 8010

b = 8Hence the Equation is true

14

4-n = -4 where n = 0

FalseSolution

4-n = -4

-n = -4-4

-n = -8

n = 8

Hence the Equation is false

-n = -4-4

-n = -8

n = 8

Hence the Equation is false

15

3p+5 = 23 where p = -6

FalseSolution

3p+5 = 23

3p = 23-5

3p = 18

Hence the Equation is false

3p = 23-5

3p = 18

p = 183

p = 6Hence the Equation is false

16

4z = 36 where z = 9

TrueSolution

4z = 36

Hence the Equation is true

z = 364

z = 9Hence the Equation is true

17

4a = 36 where a = 17

FalseSolution

4a = 36

Hence the Equation is false

a = 364

a = 9Hence the Equation is false

18

8z/7 = 72 where z = 73

FalseSolution

8z = 504

Hence the Equation is false

8z7= 72

8z = 72x78z = 504

z = 5048

z = 63Hence the Equation is false

19

9-z = 3 where z = 6

TrueSolution

9-z = 3

-z = 3-9

-z = -6

z = 6

Hence the Equation is true

-z = 3-9

-z = -6

z = 6

Hence the Equation is true

20

9q = 72 where q = 8

TrueSolution

9q = 72

Hence the Equation is true

q = 729

q = 8Hence the Equation is true