Question

120+x=300+20

Answer 1

120+x=300+20

120+x=320

x =320-120

x =200.

vậy x=200.

Answer 2

120 + x = 300 + 20

120 + x = 320

x = 320 - 120

x = 200 

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Answer 3

120+x=300+20

120+x=320

       x=320-120

       x=200.

Answer 4

120+x=300+20

120+x=320

x=320-120

x=200

Answer 5

120+x=300+20

120+x=320

       x=320-120

       x=200

Answer 6

120+x=300+20

120+x=320

       x=320-120

       x=200 

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