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

Toán Lớp 6: 32/10.15/64 22/15.3/11

Toán Lớp 6: 32/10.15/64 22/15.3/11

Comments ( 2 )

  1. 32/10 . 15/64
    = {32 . 15}/{10 . 64}
    = {1 . 3}/{2 . 2}
    = 3/4
    $\\$
    22/15 .3/11
    = {22 . 3}/{15 . 11}
    = {2 . 1}/{5 . 1}
    = 2/5   
     

  2. $\dfrac{32}{10}.\dfrac{15}{64}$
    $=\dfrac{32}{2.5}.\dfrac{3.5}{2.32}$
    $=\dfrac{3}{2.2}$
    $=\dfrac{3}{4}$
    $\dfrac{22}{15}.\dfrac{3}{11}$
    $=\dfrac{2.11}{3.5}.\dfrac{3}{11}$
    $=\dfrac{2}{5}$

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

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