How do you solve this system of equations: y+2y=−1and4x+5y=−10?

1 Answer
Kelly
Oct 9, 2017

x=−2512 and y=−13

Explanation:

First we can find y by add y together in y+2y=−1
3y=−1 and y=−13

Now we have y=−13 so we can substitute it into 4x+5y=−10 to find x

4x+5(−13)=−10
4x−53=−10
4x=−253
x=−2512
You can check the solution by substitute x and y the second equation

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