You can put this solution on YOUR website! 0.3x - 0.2y = 4
0.2x + 0.3y = -37/17
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Let's clean up these equations:
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Multiply the 1st equation by 10
3x - 2y = 40
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Multiply the 2nd equation by 17, results
3.4x + 5.1y = -37
multiply by 10
34x + 51y = -370
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They want elimination multiply the 1st equation by 51, the 2nd equation by 2, results:
153x - 102y = 2040
68x + 102y = -740
-----------------------addition eliminates y, find x
221x + 0 = 1300
x =
reduces to
x =
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Find y using the 2nd original equation
0.2 + 0.3y = -37/17 + 0.3y = -37/17
.3y = -
.3y = y =
y = *
y = reduces to
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Check solutions in the 1st original equation
0.3x - 0.2y = 4
.3* - .2* = 4 + . = 4 = 4; confirms our solution on this nasty problem
x = y =
