y + 40 = 30 +70 +10
= y +40 = 30 +10 +70
= y +40 = 40 + 70
=> y = 70
y + 40 = 30 + 70 + 10 = 40 + 70
Vì y + 40 = 40 + 70 nên y = 70
Vậy, y = 70
y + 40 = 30 + 70 + 10
y + 40 = 100 + 10
y + 40 = 110
y = 110 - 40
y = 70
vậy y = 70 nha!
Ta có :Y + 40 = 30 + 70 + 10
Y + 40 = ( 30 + 10 ) + 70
Y + 40 = 40 + 70
Y = 70
Vậy Y = 70
y+40 = 30+70+10
y+40 = 110
y = 110-40
y = 70
vậy y=70