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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 -1 1 -4 4
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OpenStudy (anonymous):
eliminate x
OpenStudy (anonymous):
I got stuck at 3y=-5x+7
OpenStudy (anonymous):
oh you doing sub method :)
OpenStudy (anonymous):
it would be easier to use addition/subtraction of equations
OpenStudy (anonymous):
15x+9y = 21 15x - 25y = -115 subtract 34y = 136 y = 136/34 y = 4 plug 4 back into original equations 5x +12 = 7 5x = -5 x = -1
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OpenStudy (anonymous):
okay thank you! :)
OpenStudy (anonymous):
15x+9y = 21 15x - 25y = -115 subtract 34y = 136 y = 136/34 y = 4 stop there :P
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