Question

DAU 20 PUNCTE SI COROANA.

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$\frac{a}{b } = 7 \: \\ \\ \: \frac{b}{c} = 5 \\ \\ \frac{a}{c} = ?$

Answer 1

$\frac{a}{b}=7 \\ \\ \frac{b}{c} =5 \\ \\ \\ \frac{a}{c} = \frac{a}{b}* \frac{b}{c} \\ \\ \frac{a}{c}=7*5 \\ \\ \frac{a}{c}=35$

Answer 2

$\frac{a}{b} * \frac{b}{c} = 35$

b si b se reduc ... si ramane ...

⇔ $\frac{a}{c} = 35$