Question

solve the following equation i) 21-3(x-7) =× +20​

Answer 1

Answer:

x=2

Step-by-step explanation:

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

21-3x+7=x+20

21+7-20=3x+x

8=4x

4x=8

x=8/4

x=2

Answer 2

Step-by-step explanation:

21-3(x-7) =× +20

21-3x+21=x+20

42-3x=x+20

42-20=x+3x

22=4x

22 = x

4

x = 11

2

x=5.5