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devlian [24]
3 years ago
6

Perform the indicated operation and simplify the result.

Mathematics
1 answer:
Sonbull [250]3 years ago
4 0

Given:

$\frac{a-a b}{a^{2}} \div \frac{a-1}{a^{3}}

Solution:

$\frac{a-a b}{a^{2}} \div \frac{a-1}{a^{3}}

Apply the fraction rule:

$\frac{w}{x} \div \frac{y}{z}=\frac{w}{x} \times \frac{z}{y}

Using this rule,

$\frac{a-a b}{a^{2}} \div \frac{a-1}{a^{3}}=\frac{a-a b}{a^{2}} \times \frac{a^{3}}{a-1}

Factor out common term a in first fraction.

                       $=\frac{a(1-b)}{a^{2}}\times \frac{a^{3}}{a-1}

Cancel the common factor a.

                        $=\frac{1-b}{a} \times \frac{a^{3}}{a-1}

Apply the multiplication of fraction rule:

$\frac{w}{x} \times \frac{y}{z}=\frac{w \times y}{x \times z}

Using this rule, we get

                         $=\frac{(1-b) a^{3}}{a(a-1)}

Cancel the common factor a.

                         $=\frac{a^{2}(1-b)}{a-1}

Therefore,

$\frac{a-a b}{a^{2}} \div \frac{a-1}{a^{3}}=\frac{a^{2}(1-b)}{a-1}

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