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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 6: 3x-4y-x.y=1 giúp mik vs nhoa :)))

Toán Lớp 6: 3x-4y-x.y=1 giúp mik vs nhoa :)))

Comments ( 2 )

  1. 3x – 4y – xy = 1
    ⇒ 3x – xy = 1 + 4y
    ⇒ x (3-y) = 1 + 4y
    ⇒ x = (1+4y)/(3-y)

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222-9+11+12:2*14+14 = ? ( )