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

Toán Lớp 6: x+x:5*7,5+x:2.9 Tìm x nhé các bạn . Hepl meeeeeeeeeeeeeeeee

Toán Lớp 6: x+x:5*7,5+x:2.9
Tìm x nhé các bạn . Hepl meeeeeeeeeeeeeeeee

Comments ( 2 )

  1. x+x:5.7,5+x:2.9=315
     x.1+x.0,2.7,5+x.0,5.9=315
    x.1+x.1,5+x.4,5=315
    x.(1+1,5+4,5)=315
    x.7=315
    x=315:7
    x=45
    Vậy: x=45

  2. x+x : 5 x 7,5+x : 2.9=315
    =>x.1+x.0,2.7,5+x.0,5.9=315
    =>x.1 + x.1,5 +x.4,5=315
    =>x(1+1,5+4,5)=315
    =>x.7=315
    =>x=315 : 7
    =>x = 45 
     

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