Question

$$( \frac{ 5 }{ 8 } + \frac{ 7 }{ 12 } ) \times (3 \frac{ 23 }{ 58 } -2 \frac{ 9 }{ 58 } )$$

Answer

17/16

Solution


Simplify  \(\frac{5}{8}+\frac{7}{12}\)  to  \(\frac{29}{24}\).
\[\frac{29}{24}(3\times \frac{23}{58}-2\times \frac{9}{58})\]
Use this rule: \(a \times \frac{b}{c}=\frac{ab}{c}\).
\[\frac{29}{24}(\frac{3\times 23}{58}-2\times \frac{9}{58})\]
Simplify  \(3\times 23\)  to  \(69\).
\[\frac{29}{24}(\frac{69}{58}-2\times \frac{9}{58})\]
Use this rule: \(a \times \frac{b}{c}=\frac{ab}{c}\).
\[\frac{29}{24}(\frac{69}{58}-\frac{2\times 9}{58})\]
Simplify  \(2\times 9\)  to  \(18\).
\[\frac{29}{24}(\frac{69}{58}-\frac{18}{58})\]
Simplify  \(\frac{18}{58}\)  to  \(\frac{9}{29}\).
\[\frac{29}{24}(\frac{69}{58}-\frac{9}{29})\]
Simplify  \(\frac{69}{58}-\frac{9}{29}\)  to  \(\frac{51}{58}\).
\[\frac{29}{24}\times \frac{51}{58}\]
Use this rule: \(\frac{a}{b} \times \frac{c}{d}=\frac{ac}{bd}\).
\[\frac{29\times 51}{24\times 58}\]
Simplify  \(29\times 51\)  to  \(1479\).
\[\frac{1479}{24\times 58}\]
Simplify  \(24\times 58\)  to  \(1392\).
\[\frac{1479}{1392}\]
Simplify.
\[\frac{17}{16}\]

Decimal Form: 1.0625