x+200=300+500:5
x + 200 = 300 + 100
x + 200 = 400
x = 400 - 200
x = 200
x+200=300+500:5
x+200=300+100
x+200=400
x=400-200
x=200
t tôi nhé
x + 200=300 + 500 : 5
x + 200 = 300+ 100
x + 200 = 400
x = 400 - 200
x = 200
x+200= 300+500:5
x+200= 300+100
x+200= 400
x = 400-200
x = 200