Solve: $\frac{7}{8} - \frac{3}{4}$ .

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Solution

We have, $\frac{7}{8} - \frac{3}{4}$
To solve the above equation we need to find L.C.M of the denominator.
The L.C.M of $8$ and $4 = 2 \times 2 \times 2 = 8$
$\begin{array}{rcl} \frac{7 \times 1}{8 \times 1} - \frac{3 \times 2}{4 \times 2} & = & \frac{7}{8} - \frac{6}{8} \\ = & \frac{1}{8} \end{array}$
Hence, the final answer is $\frac{1}{8}$ .

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