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

Toán Lớp 7: 5y/4 +3/2 – 2y = 4y(1 -2) nhanh nhá, mk sắp đến tiết rồi

Toán Lớp 7: 5y/4 +3/2 – 2y = 4y(1 -2)
nhanh nhá, mk sắp đến tiết rồi

Comments ( 1 )

  1. (5y)/4 +3/2 – 2y = 4y(1-2)
    =>(5y)/4 +6/4 – (8y)/4 = 4y(-1)
    =>(5y+6-8y)/4=-4y
    =>(-3y+6)/4=-4y
    =>-3y+6=-16y
    =>13y=-6
    =>y=-6/13
    Vậy y=-6/13
     

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

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