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

Toán Lớp 7: Sắp xếp theo thứ tự tăng dần $\dfrac{5}{- 6}$ `;` $\dfrac{3}{4}$ `;` $\dfrac{- 7}{12}$ `;` $\dfrac{5}{8}$

Toán Lớp 7: Sắp xếp theo thứ tự tăng dần
$\dfrac{5}{- 6}$ ; $\dfrac{3}{4}$ ; $\dfrac{- 7}{12}$ ; $\dfrac{5}{8}$

Comments ( 1 )

  1. <=> Ta có:
    $\frac{5}{-6}$ = $\frac{5.(-4)}{(-6).(-4)}$ = $\frac{-20}{24}$
    $\frac{3}{4}$ = $\frac{3.6}{4.6}$ = $\frac{18}{24}$
    $\frac{-7}{12}$ = $\frac{(-7).2}{12.2}$ = $\frac{-14}{24}$
    $\frac{5}{8}$ = $\frac{5.3}{8.3}$ = $\frac{15}{24}$
    <=> Vì:
    -20/24 < -14/24 < 15/24< 18/24 nên:
    <=> Sắp xếp theo thứ tự tăng dần là:
    5/-6 < -7/12 < 5/8 < 3/4

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