waecmaths question:
Simplify $1\tfrac{3}{4}-(2\tfrac{1}{3}+4)$
Option A:
$3\tfrac{5}{12}$
Option B:
$2\tfrac{7}{12}$
Option C:
$-4\tfrac{7}{12}$
Option D:
$-5\tfrac{7}{12}$
waecmaths solution:
$\begin{align} & 1\tfrac{3}{4}-(2\tfrac{1}{3}+4)=\frac{7}{4}-\left( \frac{7}{3}+4 \right) \\ & =\frac{7}{4}-\frac{19}{3}=-\frac{55}{12}=-4\frac{7}{12} \end{align}$
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