solving system of equations by eliminating (show work)

Algebra
Tutor: None Selected Time limit: 1 Day

1) 2x+8y=6

-5x-20y=-15

Jul 1st, 2015

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2x+8y=6             (1)

-5x-20y=-15         (2) 

5*(1)+2*(2), we have 

40y+2*(-20y)=30*-30

0=0

thus the two equation are dependent, there are infinity many solutions for the equation



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Jul 1st, 2015

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