Question 704975: In the linear system 2m+5n=14 2m-3n=6, how do I solve using the substitution method? Which variable do you recommend I begin with? Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! In the linear system 2m+5n=14 2m-3n=6, how do I solve using the substitution method? Which variable do you recommend I begin with?
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2m+5n=14
2m-3n=6
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It's your option.
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Solving for "m" you get:
m = (14-5n)/2
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Substitute for "m" and solve for "n":
2[(14-5n)/2] - 3n = 6
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14-5n - 3n = 6
8n = 8
n = 1
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Solve for "m":
2m - 3n = 6
2m - 3 = 6
2m = 9
m = 9/2
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Cheers,
Stan H.
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