Question

plz give answer fast​

Answer 1

ANSWER IS IN ABOVE ATTACHMENT

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Answer 2

Step-by-step explanation:

$= \frac{1}{2} + \frac{4}{7} + \frac{3}{20} - \frac{11}{20} \\ lcm \: = \: 140 \\ \\ = \frac{70 + 80 + 21}{140} - \frac{77}{140} \\ \\ = \frac{171}{140} - \frac{77}{140} \\ \\ = \frac{94}{140} = \frac{47}{70}$

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