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

Toán Lớp 7: $\frac{2x + 3}{5}$ = $\frac{3x – 5}{2}$

Toán Lớp 7: $\frac{2x + 3}{5}$ = $\frac{3x – 5}{2}$

Comments ( 1 )

  1. (2x+3)/(5)=(3x-5)/(2)
    ⇒2(2x+3)=5(3x-5)
    ⇒4x+6=15x-25
    ⇒4x-15x=-25-6
    ⇒-11x=-31
    ⇒x=(31)/(11)
    Vậy x=(31)/(11)
     

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

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