x + 60 = 200 + 300
x + 60 = 500
x = 500 - 60
x = 440
x + 60 = 200 + 300
x + 60 = 500
x = 500 - 60
x = 440
x + 60 = 200 + 300
x + 60 = 500
x = 500 - 60
x = 440
X + 60 = 200 + 300
X + 60 = 500
X = 500 - 60
X = 440
k cho mk nha
x+60=200+300
x+60=500
x=500-60
x=440