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

Toán Lớp 7: (3/4 -0,5).(5/2+0,4) Mong mn giúp mon ạ

Toán Lớp 7: (3/4 -0,5).(5/2+0,4)
Mong mn giúp mon ạ

Comments ( 2 )

  1. ($\frac{3}{4}$ – 0,5).($\frac{5}{2}$ + 0,4)
    = ($\frac{3}{4}$ – $\frac{1}{2}$).( $\frac{5}{2}$ + $\frac{2}{5}$ )
    = $\frac{1}{4}$ . $\frac{29}{10}$ 
    = $\frac{29}{40}$ = 0,725
    chúc ben học tốt
    xin hay nhất ạ
    $#CR7$

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