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3 years ago

Y=-3x+27 6y-x+9=0 substitution

Mathematics

1 answer:

gayaneshka [121]3 years ago

4 0

Answer:

x=9, y=0. (9, 0).

Step-by-step explanation:

y=-3x+27

6y-x+9=0

-----------------

6(-3x+27)-x+9=0

-18x+162-x+9=0

-19x+171=0

-19x=0-171

-19x=-171

19x=171

x=171/19

x=9

y=-3(9)+27=-27+27=0

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