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December 20, 2014

December 20, 2014

Posted by **JERMAINE** on Thursday, February 11, 2010 at 9:28pm.

5x+2y=29

x-y=-4

2x-y=-1

3x-y=2

5x+y=16

x-2y=1

5x+2y=16

-3x+4y=-7

3x+2y=19

5x-2y=5

7x-1/3-2(7y+3)/5=10/3

5x+2/4+3y-2/5=16/5

- maths -
**drwls**, Thursday, February 11, 2010 at 11:00pmI'll show you how to do the first oner. You try the others using the same method.

5x +2y = 29

x - y = -4

Double the last equation (both sides)

2x -2y = -8

Add the first and third equations.

7x = 21

x = 3

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