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

Toán Lớp 6: 3 x + 15 =90 giups e vs a can gap

Toán Lớp 6: 3 x + 15 =90 giups e vs a can gap

Comments ( 2 )

  1. 3x+15=90
    ⇒3x=90-15
    ⇒3x=75
    ⇒x=75:3
    ⇒x=25
    Vậy x=25

  2. 3x+15=90
    =>3x=90-15
    =>3x=75
    =>x=75:3
    =>x=25
    Vậy x=25.

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