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

Toán Lớp 4: X x 75 = 1800 35 x X – 25 x X + X x 89 + = 3600

Toán Lớp 4: X x 75 = 1800
35 x X – 25 x X + X x 89 + = 3600

Comments ( 2 )

  1. x × 75 = 1800
    x = 1800 : 75
    x = 24
    Vậy x = 24
    ———————————————————————————————————–
    35 × x – 25 × x + x × 89 + x = 3600
    x × ( 35 – 25 + 89 + 1 ) = 3600
    x × ( 10 + 90 ) = 3600
    x × 100 = 3600
    x = 3600 : 100
    x = 36
    Vậy x = 36

  2. Lời giải chi tiết:
    x\times75=1800
    x=1800:75
    x=24
    Vậy x=24
                                                                                         
    35\timesx-25\timesx+x\times89+x=3600
    x\times(35-25+89+1)=3600
    x\times100=3600
    x=3600:100
    x=36
    Vậy x=36

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