x - 100 - 200 = 300
x-100=300+200
x-100=500
x=500+100
x=600
x - 100 = 300+200 = 500
x = 500 +100 = 600
x - 100 - 200 = 300
x - 100 = 200 + 300
x - 100 = 500
x = 500 + 100
x = 600
\(x-100-200=300\)
\(x=300+200+100\)
\(x=600\)
x-100-200=300
=>x-300=300
=>x=300+300
=>x=600
k nha
x - 100 = 300 + 200
x - 100 = 500
x = 500 + 100
x = 600
ủng hộ nha