Solve equation and find ordered pairs

Algebra
Tutor: None Selected Time limit: 1 Day

3u+2v=-15

2u+v=-8

Solve using the elimination methods (ordered pairs.. if any)

Sep 13th, 2015

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3u+2v=-15      ------------------------------------------------------------1)


2u+v=-8          -------------------------------------------------------------2)


multiplying  equation 2 by -2

-4u-2v=16     --------------------------------------------------------------3)


adding equation 1 and 3 we get

3u+2v=-15 

-4u-2v=16 

__________

-u+0=1

u=-1

Than substituting u in 1)

-3+2v=-15

2v=-12

v=-6


ordered pair is (-1,-6)



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Sep 13th, 2015

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