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

Toán Lớp 5: bài 1: x : 100 + X x 0,09 =24 nhanh nhé

Toán Lớp 5: bài 1:
x : 100 + X x 0,09 =24
nhanh nhé

Comments ( 2 )

  1. x : 100 + x xx 0,09 =24
    =>x xx 1/100+x xx 9/100=24
    =>x xx (1/100+9/100)=24
    =>x xx ((1+9)/100)=24
    =>x xx 10/100=24
    =>x xx 1/10=24
    =>x=24:1/10
    =>x=24xx10
    =>x=240
    Vậy x=240
     

  2. x : 100 + x × 0,09 = 24
    x × 1/100 + x × 9/100 = 24
    x × ( 1/100 + 9/100 ) = 24
    x × 10/100 = 24
    x × 0,1 = 24
    x = 24 : 0,1
    x = 240
    Vậy x = 240

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

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