what is the answer for 6x-12y=24,-x-6y=4?

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savannahlangon1 savannahlangon1

17-02-2016
Mathematics

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what is the answer for 6x-12y=24,-x-6y=4?

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Panoyin Panoyin · Answer 1 · 2016-02-17T23:22:31+01:00

6x - 12y = 24 ⇒ 6x - 12y = 24
-x - 6y = 4 ⇒ -2x - 12y = 8
8x = 16
8 8
x = 2
-x - 6y = 4
-(2) - 6y = 4
-2 - 6y = 4
+ 2 + 2
-6y = 6
-6 -6
y = -1
(x, y) = (2, -1)