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OpenStudy (anonymous):
What is the value of the y variable in the solution to the following system of equations? 5x + 3y = 7 3x - 5y = -23
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OpenStudy (anonymous):
Solve for x in the first eqn. Plug that answer in for x in the second eqn. Solve for y. Whatever that y-value is, plug that in to the first eqn and solve for x.
OpenStudy (anonymous):
or you can use matrices....
OpenStudy (anonymous):
1st eqn: y = 7/3-5x/3. Plug that in for y in the second eqn and solve for x.
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