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# What is the answer to 9x-2y=-3 minus 3x+5y=27 as a coordinate point? Plz respondn w/ question answer and a how to guide a.s.a.p!!

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What is the answer to 9x-2y=-3 minus 3x+5y=27 as a coordinate point? Plz respondn w/ question answer and a how to guide  a.s.a.p!!

Been stuck on this question for like an hour!

Guest Jul 7, 2017
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9x-2y = -3,  - 3x+5y=27

Note that if we multiply the second equation by 3, we have

-9x + 15y = 81

So now we have

9x  -  2y   = -3

- 9x + 15y = 81          add  these  and we have

13y  =  78             divide both sides by 13

y =  6

And to find x we can use

9x - 2(6)  = -3

9x -  12  = -3    add 12 to both sides

9x  =  9         divide both sides by 9

x =  1

So....the answer is (x,y) = (1, 6 )

CPhill  Jul 7, 2017
edited by CPhill  Jul 7, 2017

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