Question

Resolva:

X-4= -X +20

-X -3 =2X -12

S2​

Answer 1

X = 13 e X = 3

x - 4 = - x + 20

x + x = 20 + 4

2x = 24

x = 24/2

x = 12

_______________

-x - 3 = 2x -12

-x -2x = -12 +3

-3x = -9 (.-1)

3x = 9

x = 9/3

x= 3