3(x + 2) = x - 18
3x + 6 = x - 18
3x - x = -18 - 6
2x = -24
x = -12
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12 squared plus 18 squared is equal to 468.
U can subtract 18 from each side of the equation.
What are the mathemtical signs????? Is it y^2 + 7y - 18 This factors to ( y - 2)(y + 9) or y^2 - 7y - 18 (y + 2)(y - 9)
b + 7 = 18 subtract 7 from each side b + 7 - 7 = 18 - 7 b = 11 ----------------check in original equation 11 + 7 = 18 18 = 18 --------------checks
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