BOLD FOR ANSWERS BELOW:
4c + 8t = 57
2c + 3t = 22
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Modify for elimination:
4c + 8t = 57
4c + 6t = 44
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Subtract and solve for "t":
2t = 13
t = $6.50 (cost of one table)
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Solve for "c":
2c + 3t = 22
2c + 19.5 = 22
2c = 2.5
c = $1.25 (cost of one chair)