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Solve the following expression
$\frac{-3}{4} +\frac{2}{3} -\frac{6}{7}$
Given: $\frac{-3}{4} +\frac{2}{3} -\frac{6}{7}$
To do: Solve the given expression.
Solution:
LCM of 3,4,7 is 84
= $\frac{-3\times21}{4\times21} + \frac{2\times28}{3\times28}-\frac{6\times12}{7\times12}$
= $\frac{-63}{84} + \frac{56}{84} -\frac{72}{84} $
= $\frac{-63+56-72}{84}$
Therefore the value of given expression is $\frac{-79}{84}$
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