Example

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

Question

$$21^{\circ}4\div10$$

Answer

(42*deg)/5

Solution


Use this rule: \(\frac{a}{b} \times \frac{c}{d}=\frac{ac}{bd}\).
\[\frac{21deg\times 4}{10}\]
Simplify  \(21deg\times 4\)  to  \(84deg\).
\[\frac{84deg}{10}\]
Simplify.
\[\frac{42deg}{5}\]
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