Question

Resolva as seguintes equações

A) 9-x+2=-5×+3+2×
B) 2 (×-1)-7=146
E) 3 (×+10)-2 (×-5)=0

Answer 1

A) 9-x+2=-5x+3+2x
    11-x=-3x+3
    -x+3x=3-11
    2x=-8
    x=-4

B)2 (x-1)-7=146
   2x-2-7=146
   2x-9=146
   2x=146+9
   2x=155
   x=155/2
   x=77,5

E) 3(x+10)-2 (x-5)=0
    3x+30-2x+10=0
    x+40=0
    x=-40

Bons Estudos!