SOLUTION: solve by either the substitution or the addition-orsubtraction method: 2m=n-3 and 3m=2n+9

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Question 440458: solve by either the substitution or the addition-orsubtraction method: 2m=n-3 and 3m=2n+9
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi

solving by substitution

2m = n-3  OR n = 2m+3

3m = 2n+9

3m = 2(2m+3) + 9

 3m = 4m+6+9

 -15 = m  and n = -27   ( n = 2*-15 + 3)