Question

(α - 2) + (2α +5) - (3 - a)
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7α 7α 7α
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Answer 1

$\frac{(a - 2) + (2a + 5) - (3 - a)}{7a} = \frac{a - 2 + 2a + 5 - 3 + a}{7a} = \\ = \frac{4a}{7a} = \frac{4}{7}$