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Mathematics 23 Online
OpenStudy (anonymous):

Solve this system of equations. Please write your answer as an ordered pair. -5x-8y=17 2x-7y=-17

OpenStudy (imstuck):

These are fun! Which method do you prefer? Substitution or addition?

OpenStudy (anonymous):

Whichever one is the easy one to understand..

OpenStudy (imstuck):

Addition is probably the way to go with something like this. Let's get to work!

OpenStudy (anonymous):

Alright Whats the first step or where do I start first?

OpenStudy (imstuck):

The thing you have to remember here is that you are tryng to solve for one variable at a time, so you can use its value to find the other one. So we will work to eliminate the x term first.

OpenStudy (anonymous):

Alright

OpenStudy (imstuck):

What we will do is to multiply the first equation by 2 and the second equation by 5, and when we do that, watch what happens:

OpenStudy (imstuck):

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