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

Toán Lớp 7: tính nhanh: $\frac{5.18-10.27+15.36}{10.36-20.54+30.72}$

Toán Lớp 7: tính nhanh:
$\frac{5.18-10.27+15.36}{10.36-20.54+30.72}$

Comments ( 2 )

  1. Đáp án:
     
    Giải thích các bước giải:
     

    toan-lop-7-tinh-nhanh-frac-5-18-10-27-15-36-10-36-20-54-30-72

  2. #tnvt
    \frac{5.18-10.27+15.36}{10.36-20.54+30.72}
    =\frac{5.18-10.27+15.36}{4.5.18-4.10.27+4.15.36}
    =\frac{5.18-10.27+15.36}{4(5.18-10.27+15.36)}
    =\frac{1}{4} 

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