y x 6 + y x 7 + y x 8 = 210
y x ( 6 + 7 + 8 ) = 210
y x 21 = 210
y = 210 : 21
y = 10
Mk nhanh nhất đó lại còn đúng
Chuẩn 100%
k mk nha
Mk cảm ơn bạn nhiều
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y x 6 + y x 7 + y x 8 = 210
y x ( 6 + 7 + 8 ) = 210
y x 21 = 210
y = 210 : 21
y = 10
y x 6 + y x 7 + y x 8 = 210
y x ( 6 + 7 + 8 ) = 210
y x 21 = 210
y = 210 / 21
y = 10
y x 6 + y x 7 + y x 8 = 210
y x ( 6 + 7 + 8) = 210
y x 21 = 210
y = 210 : 21
y = 10
k cho minh nha
y x 6 +y x 7 + y x 8 = 210
=> y x (6+7+8) = 210
=> y x 21 =210
=> y = 210 : 21
=> y =10.