3/10 + nbsp; nbsp;7/15 nbsp; LCM of 10 and 15 = 30 3/10 + nbsp; nbsp;7/15 nbsp; nbsp;= 3 × 3/10 nbsp; nbsp;×3 + nbsp; nbsp;7 ×2/15 × 2 ...

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Subtraction of Rational Numbers

Solve: 3/10 +...

Question

Solve: $\frac{3}{10}$ + $\frac{7}{15}$

\frac{23}{30}

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\frac{22}{30}

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\frac{24}{30}

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\frac{21}{30}

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Solution

The correct option is A $\frac{23}{30}$
$\frac{3}{10}$ + $\frac{7}{15}$

LCM of 10 and 15 = 30

$\frac{3}{10}$ + $\frac{7}{15}$ = $\frac{3 \times 3}{10 \times 3}$ + $\frac{7 \times 2}{15 \times 2}$

= $\frac{9}{30}$ + $\frac{14}{30}$

= $\frac{23}{30}$

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(\frac{1}{7} \times \frac{15}{34}) \times

(\frac{1}{7} \times \frac{2}{3}) \times \frac{15}{34}

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