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January 25, 2015

January 25, 2015

Posted by **noonie** on Friday, April 29, 2011 at 4:55pm.

- algebra -
**Damon**, Friday, April 29, 2011 at 5:08pmsolve the first equation for x

2x = -3y - 5

x = -(3 y/2 +5/2)

substitute in the second

-3(3y/2+5/2) +5y = -9

-9y/2 -15/2 + 10y/2 = -18/2

y = -3

then x = 9y/2 -5/2 = 2

check by using that x and y in equation 1

2x+3y=-5

2*2 + 3*-3 = -5?

4-9 = -5

Yes, checks

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