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April 19, 2014

April 19, 2014

Posted by **upbeat** on Tuesday, July 20, 2010 at 12:35pm.

2m+n=9

m-6n=50

the solution is (___,___)

- substitution method -
**Henry**, Tuesday, July 20, 2010 at 3:38pm1. 2m + n = 9

m - 6n = 50

Using Eq.1, solve for n:

n = 9 - 2m

Substitute 9 - 2m for n in Eq. 2:

m -6(9 -2m) = 50

Solve for m:

m - 54 + 12m = 50

m = 8

Substitute 8 for m in Eq. 1:

2(8) + n = 9

n = -7.

Solution: m = 8, and n = -7.

- substitution method -
**dawn**, Monday, November 8, 2010 at 11:52pmx=8-4y,3x+5y=3

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