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how do i solve this problem

Algebra
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solving systems of equations by substitution  y= -4/9x -3

y =-7/5x-3

Dec 2nd, 2014

 y= -4/9x -3

y =-7/5x-3

1. We are going to replace Y with top equation 

-4/9x -3 =-7/5x-3

by looking at the problem you can see that you will end up with a number times x equal to zero. when you divide by that number to get x, you know that ant number divided by 0 is 0.

x=0 

2. replace x with zero 

y= -4/9(0) -3

y=-3

Dec 2nd, 2014

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