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

Toán Lớp 9: Tìm T T – 100 – (T-150)/4 = T – 100 – ( T -150)/2

Toán Lớp 9: Tìm T
T – 100 – (T-150)/4 = T – 100 – ( T -150)/2

Comments ( 2 )

  1. T-100-\frac{T-150}{4}=T-100-\frac{T-150}{2}
    <=>T-100-\frac{T-150}{4}-T+100+\frac{T-150}{2}=0
    <=>(T-T)+(-100+100)-\frac{T-150}{4}+\frac{T-150}{2}=0
    <=>-\frac{T-150}{4}+\frac{T-150}{2}=0
    <=>-T-150.1/4+T-150.1/2=0
    <=>T-150.1/2-T-150.1/4=0
    <=>T-150.(1/2-1/4)=0
    <=>T-150=0
    <=>T=150
    Vậy S={150}
     

  2. Giải đáp + Lời giải và giải thích chi tiết:
    T-100-(T-150)/4=T-100-(T-150)/2
    <=>T-100-(T-150)/4-T+100+(T-150)/2=0
    <=>(T-150)/2-(T-150)/4=0
    <=>(T-150)(1/2-1/4)=0
    <=>(T-150)*1/4=0
    <=>T-150=0<=>T=150
    Vậy T = 150.
     

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

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