Math
posted by Chris .
Sam spent half his money on a shirt. At another store he spent half the money he had left. Then he bought a cd for $6.75. He had $2.50 left. How much money did Sam have in the beginning?

0.5x + 0.25x + 6.75 + 2.5 = x
0.75x + 9.25 = x
9.25 = x  0.75x
9.25 = 0.25x
9.25 / 0.25 = x
37 = x
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