x + 200 = 300 - 600
x + 200 = -300
x = -300 - 200
x = -500
x - 200 = 300
x = 300 + 200
x = 500 k mk nha~
x+200=300-600
x+200=-300
x=-300-200
x=-500
x-200=300
x=300+200
x=500
x+200=300-600
x+200=-300
x =-300-200
x =-500
x-200=300
x =300+200
x =500
x + 200 = 300 - 600 x - 200 = 300
x + 200 = - 300 x = 300 + 200
x = - 300 - 200 x = 500
x = - 500 Vậy x = 500
Vậy x = - 500
X+22=300-600 X+22=-300 X =-300 - 22 X =-322 X - 200=300 X =300+200 x =500 HIHIHIHI