Question about Bagatrix Algebra Solved! 2005 (105101) for PC

# 4x+8y=20 -4x+2y=-30 - Bagatrix Algebra Solved! 2005 (105101) for PC

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• rocelyn Mar 10, 2009

4x+8y=20
-4x+2y=-30

• Anonymous Apr 15, 2009

2x-8y=20

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4x+8y=20 || /4
x+2y=5
x=5-2y

-4x+2y=-30 || /2
-2x+y=-15
-2(5-2y)+y=-15
-10+4y+y=-15
5y=-5
y=-1

x=5-2y || y=-1
x=5-2(-1)
x=5+2
x=7

Posted on Mar 10, 2009

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Posted on Jan 02, 2017

x=7
y=-1

Posted on Feb 17, 2009

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This is best written as two separate equations:

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Dear Anne I am old school but I think it works lide this..

6x+21+4x=-9

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