How do you solve the system of equations −x−6y=−10 and x+9y=16?

1 Answer
Alberto M.
Apr 17, 2017

(−2,2)

Explanation:

You can go with substitution:
the second equation gives x=16−9y, so substituting in the first:
−16+9y−6y=−10, so 3y=6⇒y=2, and putting y=2 in the second equation we get x=−2

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