Question

resolva corretamente as seguintes equaçoes a)y-58=84 b)34-y=11 c)20-y=5 d)2x-6=20

Answer 1

A) y-58=84
    y=84-58
    y=26

B) 34-y=11
    -y=11-34
    -y=-23 (-1)
    y=23

C) 20-y=5
    -y=5-20
    -y=-15 (-1)
    y=15

D) 2x-6=20
    2x=20+6
    2x=26
    x=$\frac{26}{2}$
    x=13