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OpenStudy (anonymous):
Use elimination to solve the system. What is the value of x? 4x + 7y = -14 and 8x + 5y = 8 Answer 3.5 -1.5 8 -4
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OpenStudy (anonymous):
multiplying eqn by 2, 8x+14y=-28 now subtracting, 8x+14y=-28 8x+5y=8 9y=-36 y=-4
OpenStudy (anonymous):
4x+7*-4=-14 4x-28=-14 4x=-14+28 4x=14 x=14/4
OpenStudy (anonymous):
3.5
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