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

Toán Lớp 7: 3(x-1/2)-5(x+3/5)=-x+1/5 tìm x nhanh giúp mik vs, mik cần rất gấp

Toán Lớp 7: 3(x-1/2)-5(x+3/5)=-x+1/5
tìm x
nhanh giúp mik vs, mik cần rất gấp

Comments ( 2 )

  1. 1.
    3.(x-1/2)-5.(x+3/5)=-x+1/5
    ⇔3x-3/2-5x-15/5+x-1/5=0
    ⇔-x-47/10=0
    ⇔x=-47/10
     

  2. 3(x – $\frac{1}{2}$) – 5(x + $\frac{3}{5}$) = -x + $\frac{1}{5}$ 
    ⇔ 3x – $\frac{3}{2}$ – 5x – 3 + x – $\frac{1}{5}$ = 0
    ⇔ -x – $\frac{47}{10}$ = 0
    ⇔ -x = $\frac{47}{10}$
    ⇔ x = -$\frac{47}{10}$
    Vậy x = -$\frac{47}{10}$
    Chúc bạn học tốt

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

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