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12-12-2019
Mathematics

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{8x-10y=20 and -7x+10y-20

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12-12-2019

Write the equations:

8x-10y=20

-7x+10y=20

Add them using elimination

x=40

Now solve for y

8(40)-10y=20

10y=300

y=30

So there you have it: x=40, y=30.

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