Posted by **zac** on Wednesday, January 6, 2010 at 7:08pm.

pleae help solve: 3x-5y=7 and 5x-2y=-1

- algebra -
**Damon**, Wednesday, January 6, 2010 at 7:30pm
3x-5y=7 times 5 15x-25y=35

5x-2y=-1times 3 15x -6y=-3

subtract second from first

0x -19y = 38

y = -2

3x-5(-2) = 7

3x +10 =7

3x = -3

x = -1

check

3(-1) -5(-2) = 7 yes

5(-1)-2(-2)=-1 yes

- algebra 2 -
**deondre**, Wednesday, November 10, 2010 at 9:37pm
25y to the second power times x to the second power plus 20xy to the second power plus 4x to the second power

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