You can put this solution on YOUR website! 4x+y=30
5x+6y=21
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multiply the first equation by 6 and subtract the second equation from the first
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24x +6y = 180
5x +6y = 21
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19x = 159
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x = 159/19
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substitute x to find y
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4(159/19) +y = 30
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multiply through by 19 to eliminate the fraction
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4(159) +19y = 570
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636 + 19y = 570
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19y = 570-636
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19y = -66
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y = -66/19
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Answer:
x = 159/19
y = -66/19
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Check the answer:
5*(159/19) + 6*(-66/19) = 21 ??
Yes.
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4(159/19)+(-66/19) =30 ??
Yes.
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Done.
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