<PRE><B>Question 585183</B>
0.3x-0.2y = 4
0.5x+0.5y = -45/17
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3x-2y= 40
5x+5y= -450/17
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15x-10y= 200
15x+15y= -1350/17
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Add those two equation together to get:
5y= 2050/17 
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y = 410/17
Solve for &quot;x&quot;:
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3x-2(410/17)=40
3x - 820/17 = 680/17
3x = 1500/17
x = 500/17
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Solution 500/17 , 410/17
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Cheers,
Stan H.
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