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October 20, 2014

October 20, 2014

Posted by **maryk** on Friday, September 4, 2009 at 11:51pm.

5m + n = 36

m -7n = 36

A big ty:)

- algebra -
**drwls**, Saturday, September 5, 2009 at 1:17amSince m = 7n + 36,

substitute 7n + 36 for m in the first equation.

That should lead to

35n + 180 + n = 36

which is the same as

36n = -144

n = -4

Now solve for m with either of your first two equations.

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