Question

1. Solve :-
21-3(a-7) = a+20

Answer 1

Answer:

ans : a = 5.5

Step-by-step explanation:

21-3a + 21 = a+20, 42-3a =a+20, -3a-a=20-42, -4a = -22, 4a=22,a= 5.5

Answer 2

Step-by-step explanation:

solution

21-3(a-7)=a+20

21-3a-21=a+20

-3a=a+20

-3a-a=20

4a=20

a=20÷4

a=5

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