Question

x + 20 = 60 +30 

Answer 1

x + 20 = 90

       x = 90 - 20

       x = 70

Answer 2

x+20=90

x=90-20

x=70

Answer 3

x + 20 = 60 + 30

x + 20 =    90

x         = 90 - 20

x         =   70

Answer 4

x+20=60+30

x+20=90

     x= 90-20

     x= 70

tk nhé

Answer 5

x+20=60+30

      x=90-20

      x=70

Answer 6

x+20=60+30

x+20=90

x=90-20

x=70

Answer 7

x+20=90

x=90-20

x=70

Answer 8

x+20=90

x=90-20

x=70

Answer 9

x+20=90

x=90-20

x=70

Answer 10

x+20=90

x=90-20

x=70

Answer 11

x+20=90

x=90-20

x=70