Question

21-3(x-7)=x+20 plzz answer this plzzz plzzz​

Answer 1

Answer:

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

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

or, 21-3x-7=x+20

or, -4x=20-21+7

or, -4x=-1+7

or, -4x=6

or, x=-6/4

or,x= -3/2=-1½