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  • 30-03-2017
  • Mathematics
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rarrininger
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  • 30-03-2017
3c + 2t = $26
5c + 6t = $72-3(3c + 2t = $26)
-9c - 6t = $-78
5c + 6t = $72
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-4c = -6
-4c/-4 = -6/-4
c = 1.53c + 2t = $26
3(1.5) + 2t = $26
4.5 + 2t = $26
4.5-4.5 + 2t = $26 - 4.5
2t = $21.5
2t/2 = $21.5/2
t = 10.75Check
3(1.5) + 2(10.75) = $26
4.5 + 21.50 = $26
$26 = $265(1.5) + 6(10.75) = $72
7.5 + 64.50 = $72
$72 = $72
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