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

Toán Lớp 6: F = $\frac{1}{30}$ + $\frac{5}{66}$ + $\frac{2}{143}$ + $\frac{7}{260}$

Toán Lớp 6: F = $\frac{1}{30}$ + $\frac{5}{66}$ + $\frac{2}{143}$ + $\frac{7}{260}$

Comments ( 2 )

  1. Giải đáp:
     F = 3/20
    Lời giải và giải thích chi tiết:
     F = 1/30 + 5/66 + 2/143 + 7/260
    F = ( 1/30 + 7/260 ) + ( 5/66 + 2/143 )
    F = 47/780 + 7/78
    F = 3/20

  2. Giải đáp+Lời giải và giải thích chi tiết:
    $\text{F = $\dfrac{1}{30}$ + $\dfrac{5}{66}$ + $\dfrac{2}{143}$ + $\dfrac{7}{260}$}$
    $\text{F = ($\dfrac{1}{30}$ + $\dfrac{7}{260}$) + ( $\dfrac{5}{66}$ + $\dfrac{2}{143}$)}$
    $\text{F = ($\dfrac{260}{7800}$ + $\dfrac{210}{7800}$) + ( $\dfrac{715}{9438}$ + $\dfrac{132}{9438}$)}$
    $\text{F = $\dfrac{470}{7800}$ + $\dfrac{847}{9438}$}$
    $\text{F = $\dfrac{47}{780}$ + $\dfrac{7}{78}$}$
    $\text{F = $\dfrac{47}{780}$+ $\dfrac{70}{780}$}$
    $\text{F = $\dfrac{117}{780}$ = $\dfrac{3}{20}$}$
    $#Hoctot$

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