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

Toán Lớp 7: tìm x, biết 14:x=-7:5 mn giúp mik nha !!!

Toán Lớp 7: tìm x, biết 14:x=-7:5
mn giúp mik nha !!!

Comments ( 2 )

  1. $\text{14:x=-7:5}$
    $\text{⇒14:x=-$\dfrac{7}{5}$}$
    $\text{⇒x=14:(-$\dfrac{7}{5}$)}$
    $\text{⇒x=-10}$
    $\text{Vậy x=-10}$

  2. Giải đáp:
    14:x=-7:5
    14:x=-$\frac{7}{5}$ 
    x=14:(-$\frac{7}{5}$ )
    x=-10
    vậy x=-10
     

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