Question 312856
 2 people share a winning lottery ricket woth $1200. 
one person received $800 less than three times what the other person received. How much did each person receive.
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Equations:
a + b = 1200
a = 3b-800
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Substitute for "a" and solve for "b":
3b-800 + b = 1200
4b = 2000
b = $500 (amount one of the persons received)
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Since a = 3b-800, a = 3*500-800 = $700 (amount the other person received)
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Cheers,
Stan H.