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August 21, 2014

August 21, 2014

Posted by **Michelle** on Tuesday, July 13, 2010 at 7:40pm.

0.3x-0.2y=4

0.4x+0.5y=-55/17

- Math please help asap -
**Reiny**, Tuesday, July 13, 2010 at 8:00pm1st one times 5, 2nd one times 2

1.5x - y = 20

.8x + y = -110/17

add them

2.3x = 230/17

x = 100/17

plug this back into 1.5x - y = 20

1.5(100/17) - y = 20

-y = 20 - 150/17

y = -190/17

weird equations, weird solutions, but they are right, I checked them

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