Example

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

Question

$$\frac{ 39 }{ 90 \times 399999999/ }$$

Answer

13/11999999970

Solution


Use this rule: \(a \times \frac{b}{c}=\frac{ab}{c}\).
\[\frac{39}{90\times 399999999}\]
Simplify  \(90\times 399999999\)  to  \(35999999910\).
\[\frac{39}{35999999910}\]
Simplify.
\[\frac{13}{11999999970}\]
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