Question

solve this problem with the help of step
7 and 8​

Answer 1

Step-by-step explanation

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7.

$\frac{ - 1}{12} - \frac{ - 4}{9} \\ \\ difference \\ \\ \frac{ - 3 - ( - 24)}{36} \\ \\ \frac{ - 3 + 24}{36} \\ \\ = \frac{21}{36} \\ \\ now \: sum \\ \\ \frac{ - 1}{12} + \frac{ - 4}{9} \\ \\ = \frac{ - 3 + ( - 24)}{36} \\ \\ = \frac{ - 3 - 24}{36} \\ \\ = \frac{ - 27}{36} \\ \\ now \: division </strong><strong>\</strong><strong>\</strong><strong> </strong><strong>\frac{21}</strong><strong> </strong><strong>{36} \div \frac{ - 27}{36} \\ \\ = \frac{21}{36} \times \frac{36}{ - 27} \\ \\ = \frac{ - 21}{27} \\ \\ = \frac{ - 7}{9 } \: \: answer \\ \\ 8. \\ \\ sum \\ \\ \frac{5}{9} + \frac{ - 3}{7} \\ \\ = \frac{35 + ( - 27)}{63} \\ \\ = \frac{8}{63} \\ \\ product \\ \\ \frac{ - 11}{9} \times \frac{ - 4}{7} \\ \\ = \frac{44}{63} \\ \\ division \\ \\ \frac{8}{63} \div \frac{44}{63} \\ \\ = \frac{8}{63} \times \frac{63}{44} \\ \\ = \frac{8}{44} \\ \\ = \frac{2}{11}$

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