Question

1) 20-n = 8
2) n/5-21= 22
3) 1/2(30-n) = 4
4) 1/4n = 28​

Answer 1

Step-by-step explanation:

1) 20 - n = 8

-n = 8 - 20

-n = -12

n = 12

2) n/5 - 21 = 22

n/5 = 22 + 21

n/5 = 43

n = 215

3) 1/2(30 - n) = 4

30 - n = 8

-n = 8 - 30

-n = -22

n = 22

4) 1/4n = 28

n = 28 x 4

n = 112

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