Question

x+20=50.2-50

Answer 1

x + 20 = 50 . 2 -50

x + 20 = 100 - 50

x + 20 = 50

       x = 50 - 20

       x= 30

Answer 2

x+20=50.2-50

x+20=100-50

x+20=50

x=50-20

x=30

Answer 3

x+20=100-50

x+20=50

x=50-20=30

Answer 4

x+20=100-50

x+20=50

x=50-20

x=30

Answer 5

x+20=50.2-50

x+20=100-50

x+20=50

x      =50-20

x      = 30

Answer 6

x+20=50x2-50

x+20=50

x=50-20

x=30

Vậy x=30

Answer 7

x + 20 = 100 - 50

x + 20 = 50

x = 50 - 20

x = 30

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