Question

qual o resultado da conta 3(1-x) -2 (x+1)=9(x-1)+3

Answer 1

3-3x-2x+2=9x-9+3
-5x+5=9x-6
14x=11
x=11/14

Answer 2

3.(1-x)-2.(x+1)=9.(x-1)+3
3-3x-2x-2=9x-9+3
3-2-5x=9x-6
1-5x=9x-6
-5x-9x=-6-1
-14x = -7 (.-1)
14x = 7
x = 7/14
x = 0.5