Toán Lớp 6: xy−2x−y=4xy
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Toán Lớp 6: xy−2x−y=4xy
Mk dang cần rất gấp
Comments ( 1 )
x y – 2 x – y = 4 x y
⇒(-3 x – 1) y = 2 x
⇒-3 x y – 2 x – y = 0
⇒x (y – 2) – y = 4 x y
⇒3 x + 1!=0, y = -(2 x)/(3 x + 1)
⇒x = -1, y = -1
⇒x = 0, y = 0