SOLUTION: Solve by the elimination method.
0.3x - 0.2y = 4
0.5x + 0.5y = -45/17 (this is a fraction that is -)
I have no idea how to solve this, what do i do with that fraction? Help
Algebra ->
Quadratic Equations and Parabolas
-> SOLUTION: Solve by the elimination method.
0.3x - 0.2y = 4
0.5x + 0.5y = -45/17 (this is a fraction that is -)
I have no idea how to solve this, what do i do with that fraction? Help
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Question 137503: Solve by the elimination method.
0.3x - 0.2y = 4
0.5x + 0.5y = -45/17 (this is a fraction that is -)
I have no idea how to solve this, what do i do with that fraction? Help please. Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! Solve by the elimination method.
0.3x - 0.2y = 4
0.5x + 0.5y = -45/17
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Multiply thru 1st by 0.5 and 2nd by 0.3 to get:
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0.15x - 0.10y = 2
0.15x + 0.15y =-0.7911
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Subtract 1st from 2nd to solve for "y":
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0.05y = -2.7911
y = -5.5882
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Substitute into 0.3x-0.2y = 4 to solve for "x":
0.3x -0.2(-5.5882) = 4
0.3x = 2.88235...
x = -9.6078...
Cheers,
Stan H.
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Cheers,
Stan H.
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