-12x = 72
Divde both sides by -12 to find the value of x:
x = -6
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5x-3 = 11+12x 5x-12x = 11+3 -7x = 14 x = -2
17
6*3-6*2-12x v v 18 - 12-12x v v 6-24x -6 -6 something like that..
72
2x2 - 72 would be factored into (2x - 12)(x + 6) or (2x + 12)(x - 6) To double check, multiply each pair: (2x - 12)(x + 6) = 2x2 + 12x - 12x - 72 = 2x2 - 72 (2x + 12)(x - 6) = 2x2 - 12x + 12 x - 72 = 2x2 - 72