Question

Divide.
(i) The sum of 5/21, 4/7 and by their difference.
(ii) The difference of 12/ 5, -16/ 20 by their product.

Answer 1

Answer:

See the above image for the answer and hope u understand that...

Answer 2

Answer:

$i) \frac{5}{21} + \frac{4}{7} \\ take \: the \: lcm \: of \: 21 \: and \: 7 = 21 \\ \frac{5 + 12}{21} = \frac{17}{21} \\ we \: would \: take \: the \: same\: lcm \\ \frac{12 - 5}{21} = \frac{7}{21} \\ \frac{17}{21} \div \frac{7}{21} \\ we \:will \: do \: the \: reciprocal \: of \: \frac{7}{21} so \: we \:will \: get \: \frac{21}{7} \\ \frac{17}{21} \times \frac{21}{7} = \frac{17}{7} = 2 \frac{3}{7}$

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