solving equation and check the solution

Question

1.) t + 7 = 12

2.) h - 3 = 8

3.) 8 = b - 9

4.) k - 4 = - 14

5.) m + 9 = - 7

6.) y - 10 = - 3

7.) - 14 = 2 + d

8.) 15 + n = 10

9.) -8 = r - 6

10.) 11 = w - 5

11.) - 9 = g + 9

12.) 12 + c = 16

Answer 1

1)

t + 7 = 12

Subtract 7 from each side

t + 7 - 7 = 12 - 7

t = 5.

Answer 2

2)

h - 3 = 8

Add 3 to each side

h - 3 + 3  = 8 + 3

h = 11.

 

Answer 3

3.)

8  = b - 9

Add 9 to each side

8 + 9  = b - 9 + 9

17 = b + 0

b = 17.

 

Answer 4

4.)

k - 4  = -14

Add 4 to each side

k  - 4 +  4 = - 14 + 4

k  = -10.

Answer 5

5.)

m + 9 = -7

Subtract 9 from each side

m + 9 - 9 = - 7 - 9

m + 0 = -16

m = - 16.

Answer 6

6.)

y - 10 = -3

Add 10 to each side

y - 10 + 10 =  -3 + 10

y = 7.

Answer 7

7.)

-14 = 2 + d

Add 14 to each side

14 - 14 = 2 + d + 14

0 = d + 16

Subtract 16 from each side

- 16 = d + 16 - 16

- 16 = d

d = -16.

Answer 8

8.)

15 + n = 10

Subtract 15 from each side

15 + n - 15 = 10 - 15

n = -5.

Answer 9

9.)

-8 = r - 6

Add 6 to each side

6 - 8 = r - 6 + 6

r = -2.

Answer 10

10.)

11 = w - 5

Add 5 to each side

5 + 11 = w - 5 + 5

 w  = 16.