300-y+200=635
300-y=635-200
300-y=435
y=300-435
y=-135
300 - y + 200 = 635
300 - y = 635 - 200
300 - y = 435
y = 300 - 435
y = - 135
300-y=635-200
300-y=435
y=300-435
y=-135
200+56-y=206
256-y=206
y=256-206
y=50
Hok tốt.
200 + 56 - x = 206
56 - x = 206 - 200
56 - x = 6
x = 56 - 6
x = 50
300 - y + 200 = 635
300 - y = 635 - 200
300 - y = 435
y = 300 - 435
y = -135
200 + 56 - x = 206
256 - x = 206
x = 256 - 206
x = 50
300 - y + 200 = 635
300 - y = 635 - 200
300 - y = 435
y = 300 - 435
y = -135
200 + 56 - x = 206
56 - x = 206 - 200
56 - x = 6
x = 56 - 6
x = 50
tìm y :
300 - y + 200 = 635
300 - y = 635 - 200
300 - y = 435
y = 435 - 300
y = -135
tìm x :
200 + 56 - x = 206
56 - x = 206 - 200
56 - x = 6
x = 56 - 6
x = 50
300 - y + 200 = 635
=> 300 - y = 635 - 200
=> 300 - y = 435
=> y = 300 - 435
=> y = -135
200 + 56 - x = 206
=> 256 - x = 206
=> x = 256 - 206
=> x = 50
300 - x + 200 = 635
=> 300 - x = 635 - 200
=> 300 - x = 435
=> x = 300 - 435
=> x = - 135
200 + 56 - x = 206
=> 256 - x = 206
=> x = 256 - 206
=> x = 50