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What should be added to $5 \frac{4}{15} $ to get $12 \frac{3}{5}$?
To do: Find the number which when added to $5 \frac{4}{15} $ gives $12 \frac{3}{5}$
Solution:
$5 \frac{4}{15} $ to get $12 \frac{3}{5}$
Let the number be$x$
then $x + 5 \frac{4}{15} = 12 \frac{3}{5}$
$x + \frac{79}{15} = \frac{63}{5}$
$x = \frac{63}{5} - \frac{79}{15}$
= $\frac{63\times3}{5\times3} - \frac{79}{15}$
= $\frac{189}{15} - \frac{79}{15}$
= $\frac{189 - 79}{15}$
= $\frac{110}{15}$
$x = \frac{22}{3}$
$x= 7 \frac{1}{3}$
Therefore, 7 should be added $5 \frac{4}{15} $ to to get $12 \frac{3}{5}$
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