Question 233220
 solve by the elimation method. 0.3x-0.2y=4
0.4x+5y=1 What is the solution set I came up with (220/23, - 130/23) am I right or close to it
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Multiply thru both equations by 10 to get:
3x-2y=40
4x+50y=10
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Multiply thru the 1st equation by 25:
75x-50y=1000
4x +50y = 10
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Add and solve for "x":
79x = 1010
x = 1010/79
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Then substitute into 3x-2y=50 to solve for "y".
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Cheers,
Stan H.