Question

x + 20 = 100 - 20

Answer 1

x+20 = 80

Vậy x =80-20 =60.

Answer 2

x+20=100-20

=> x+20= 80

=>x=80-20

=>x=60

CHÚC BẠN HỌC TỐT 

Answer 3

dễ như ăn bánh

x+20=100-20

x+20=80

x=80-20

x=60

Answer 4

x + 20 = 100 - 20

x + 20 = 80

x = 80 - 20

x = 60

Answer 5

x+20=80

x      =80-20

x      =60

vậy x bằng 60

Answer 6

x + 20 = 80

       x = 80 - 20

       x = 60

Answer 7

Ta có : x+20=80

           x=80-20

           x=60

Answer 8

x + 20 = 100 - 20

x + 20 = 80

x = 80 - 20

x = 60