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3 years ago

Solve by elimination. 5x-7y=19 7x-7y=-7

Mathematics

1 answer:

SVEN [57.7K]3 years ago

4 0

Answer:

(x,y)=(-13,-12)

Step-by-step explanation:

5x - 7y = 19

7x - 7y = -7 Multiply both sides of the equation by -1

Which then gives you :

5x-7y=19 Sum the equations vertically to eliminate

-7x+7y=7 at least on variable

-2x=26 Divide both sides of the equation by -2

X=-13 Substitute the given value of x into the equation 7x - 7y =-7

7 x(-13)-7y=-7 solve the equation for y

y=-12

Thus gives you (-13,-12)

Hope this was useful!!! Sorry if it's wrong.

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