(2/5)(-3/7)-1/63/2+1/14*2/5

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Solution

2/5 (-3/7)-1/63/2+1/142/5
= -6/35 -3/12 +2/70
= -6/35 -105+12/520
= -6/35 -117/420
= -72-117 /420
= -189/420
= -9/20

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Similar questions

Using appropriate property of rational numbers, simplify the following.

$\frac{2}{5} \times (\frac{- 3}{7}) - \frac{1}{6} \times \frac{3}{2} + \frac{1}{14} \times \frac{2}{5}$

\frac{2}{5} \times (- \frac{3}{7}) - \frac{1}{6} \times \frac{3}{2} + \frac{1}{14} \times \frac{2}{5}

Using appropriate properties, find:

i) $- \frac{2}{3} \times \frac{3}{5} + \frac{5}{2} - \frac{3}{5} \times \frac{1}{6}$

\frac{2}{5} \times (\begin{matrix} - \frac{3}{7} \end{matrix}) - \frac{1}{6} \times \frac{3}{2} + \frac{1}{14} \times \frac{2}{5}

Using appropriate properties find:

(i) $- \frac{2}{3} \times \frac{3}{5} + \frac{5}{2} - \frac{3}{5} \times \frac{1}{6}$

(ii) $\frac{2}{5} \times [- \frac{3}{7}] - \frac{1}{6} \times \frac{3}{2} + \frac{1}{14} \times \frac{2}{5}$

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