Question

Simplify : (-21/81) + (5/18)

Answer 1

Step-by-step explanation:

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Answer 2

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$( \frac{ - 21}{81} ) + ( \frac{5}{18} )$

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$( \frac{ - 21}{81} ) + ( \frac{5}{18} )$

Remove parenthese:

$(a) = a$

$= \frac{ - 7}{27} + \frac{5}{18}$

Let Common Mulipliers:

$(27) \: (18) \: (54)$

$- \frac {14}{54} + \frac{15}{54} \\ \implies \: \frac{a}{c} + \frac{b}{c} = \frac{a + b}{c}$

$\implies \: \frac{ - 14 + 15}{54} \\ \implies \: = \frac{1}{54}$