0
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An equation, solution x = -10
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3x + 8 = 2x +28 3x - 2x = 28 - 8 x=20
4x + 5 = 3x + 84x-3x + 5 - 5 = 3x - 3x + 8 -5x = 3
3x+8 = 12 3x = 4 x = 4/3
3x-6y=-8
2x2+6x-8 = 72 2x2+6x-8-72 = 0 2x2+6x-80 = 0 (2x-10)(x+8) = 0