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If Dee bought a sweater and a shirt for 40 dollars but the sweater cost 12 more than the shirt how much did the shirt cost?
Wiki User
∙ 13y ago
x =shirt
y =sweater
shirt + sweater = $40
x + y = 40
shirt + 12 = the price of the sweater (price of the sweater is $12 more than the shirt)
x + 12 = y
x + y = 40
x + (x + 12) = 40
2x + 12 = 40
2x + 12 - 12 = 40 - 12
2x = 28
2x / 2 = 28 / 2
x = 14
x = shirt = $14
IF...
shirt + sweater = $40
x + y = 40
14 + y = 40
14 + y - 14 = 40 - 14
y = 26
y = sweater = $26
Wiki User
∙ 13y ago
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