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

Toán Lớp 6: 2x + $\frac{8}{15}$ . 2x = 46 Tìm x

Toán Lớp 6: 2x + $\frac{8}{15}$ . 2x = 46
Tìm x

Comments ( 2 )

  1. Giải đáp+Lời giải và giải thích chi tiết:
    2x+8/15 .2x=46
    =>2x.1+8/15 .2x=46
    =>2x.(1+8/15)=46
    =>2x. 23/15=46
    =>2x=46:23/15
    =>2x=30
    =>x=30:2
    =>x=15
    Vậy x=15

  2. 2x+8/15. 2x=46
    ⇔2x.(1+8/15)=46
    ⇔2x. 23/15=46
    ⇔2x=46: 23/15
    ⇔2x=30
    ⇔x=30:2
    ⇔x=15
    Vậy x=15
     

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

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