Example

3(r+2s)=2t-4
a⋅(b-2)=3b
3(r+2s)=2t-4
a⋅(b-2)=3b

Question

$$\frac{ 2 }{ 15 \frac { + } { } } + \frac{ 9 }{ 60 }$$

Answer

2/(15*)+3/20

Solution


Simplify  \(+\)  to  .
\[\frac{2}{15\times \frac{}{}}+\frac{9}{60}\]
Use this rule: \(a \times \frac{b}{c}=\frac{ab}{c}\).
\[\frac{2}{15}+\frac{9}{60}\]
Simplify  \(\frac{9}{60}\)  to  \(\frac{3}{20}\).
\[\frac{2}{15}+\frac{3}{20}\]
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