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posted by Zakariya on Saturday, February 1, 2014 at 5:34am.

Solve x-3t=6 and 4x+3t=9

well, we know that x = 3t+6, so use it: 4(3t+6)+3t = 9 12t+24+3t = 9 15t = -15 t = -1 so, x = 3t+6 = 3

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