If $m - n = 2$ and $2m + n = 7$, then $m =$... | Free GMAT Practice Question | GMAT Panda

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If m - n = 2 and 2 m + n = 7, then m =

Explanation	Calculations	Help
$We use Simultaneous Equations - Combination to eliminate n by adding the two equations.$	$(m - n) + (2 m + n) = 2 + 7 3 m = 9$	Theory & Tactics Method Card EQUA3-B Click to view full details
$We then divide both sides by 3 to isolate m .$	$3 m = 9 m = 3$	Theory & Tactics Method Card EQUA1-C Click to view full details

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D

If m - n = 2 and 2 m + n = 7, then m =

Explanation	Calculations	Help
$We use Simultaneous Equations - Combination to eliminate n by adding the two equations.$	$(m - n) + (2 m + n) = 2 + 7 3 m = 9$	Theory & Tactics Method Card EQUA3-B Click to view full details
$We then divide both sides by 3 to isolate m .$	$3 m = 9 m = 3$	Theory & Tactics Method Card EQUA1-C Click to view full details

Scroll horizontally to view all columns

D