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January 30, 2015

January 30, 2015

Posted by **jess** on Sunday, April 4, 2010 at 9:45am.

0.3x-0.2y=4

0.4x+0.5y= - 55/17

Thank you

- algebra -
**bobpursley**, Sunday, April 4, 2010 at 10:17ammultiply the first equation by 5, the second equation by2

1.5x-y=20

.8x+y=-110/17

add the equations

2.3x=20-110/17

multipy both sides by 17

39.1x=340-110

x= 230/39.1

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