waecmaths question:
Simplify $1\tfrac{1}{2}+2\tfrac{1}{3}\times \tfrac{3}{4}-\tfrac{1}{2}$
Option A:
$-2\tfrac{1}{3}$
Option B:
$-2\tfrac{1}{4}$
Option C:
$2\tfrac{1}{8}$
Option D:
$2\tfrac{3}{4}$
waecmaths solution:
$\begin{align} & 1\tfrac{1}{2}+2\tfrac{1}{3}\times \tfrac{3}{4}-\tfrac{1}{2}=\tfrac{3}{2}+\tfrac{7}{3}\times \tfrac{3}{4}-\tfrac{1}{2} \\ & =\tfrac{3}{2}+\tfrac{7}{4}-\tfrac{1}{2} \\ & =\tfrac{6+7-2}{4}=\tfrac{11}{4} \\ & =2\tfrac{3}{4} \end{align}$
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