algebra
posted by juice .
if you can buy 2 pair of pants and 1 shirt for 79.85$ before tax is added and 1 pair of pants and 2 shirts for 69.85$ before tax is added , how much does a shirt cost ?

2p + 1s = 7985
1p + 2s = 6985
first x 2 >
4p + 2s = 15970
1p + 2s = 6985
subtract them
3p = 8985
p = 2995
carry on from there
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