Question

tìm x, biết:

( x + 50) - 20 = 0

Answer 1

( x + 50) - 20 = 0

x + 50 = 0 + 20

x + 50 = 20

x = 20 -50

x = 20 + (- 50)

x = -(50-20)

x = -30

Answer 2

( x+50) -20 =0

x+50=0+20

x+50 =20

x=20-50

x=-30

Answer 3

(x + 50) - 20 = 0

x + 50 = 0 + 20

x + 50 = 20

x = 20 - 50

x = -30

Vậy x = -30 nha bạn