Question

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Answer 1

Step-by-step explanation:

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Answer 2

a)

$\longmapsto \frac{1}{2} + \frac{1}{3} + \frac{1}{4} \\ \\ \longmapsto firstly \: we \: find \: the \: l.c.m. \: of \: 2,3 ,and \: 4 \: \\\longmapsto \: so, \: the \: l.c.m. \: is \: 12 \\ \\ \longmapsto \: now, \: we \: will \: equal \: all \: the \: denominators \: \\ \\ \longmapsto \frac{1}{2} \times6 = \frac{6}{12} \\ \\ \longmapsto \: \frac{1}{3} \times 4 = \frac{4}{12} \\ \\ \longmapsto \frac{1}{4} \times 3 = \frac{3}{12} \\ \\ now, \longmapsto \frac{6}{12} + \frac{4}{12} - \frac{3}{12} \\ \\ \longmapsto \: \frac{6 + 4 - 3}{12} \\ \\ \longmapsto \frac{10 - 3}{12} \\ \\ \longmapsto \: \frac{7}{12}$

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