Question 13

waecmaths question: 

Simplify: $3x-(p-x)-(r-p).$

Option A: 

$2x-r$

Option B: 

$2x+r$

Option C: 

$4x-r$

Option D: 

$2x-2p-r$

waecmaths solution: 

$\begin{align}  & 3x-(p-x)-(r-p)=3x-p+x-r+p \\ & 3x-(p-x)-(r-p)=4x-r \\\end{align}$ 

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