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Simplifying (7x2 + 12) + -1(9x2 + -2) = y Reorder the terms: (12 + 7x2) + -1(9x2 + -2) = y Remove parenthesis around (12 + 7x2) 12 + 7x2 + -1(9x2 + -2) = y Reorder the terms: 12 + 7x2 + -1(-2 + 9x2) = y 12 + 7x2 + (-2 * -1 + 9x2 * -1) = y 12 + 7x2 + (2 + -9x2) = y Reorder the terms: 12 + 2 + 7x2 + -9x2 = y Combine like terms: 12 + 2 = 14 14 + 7x2 + -9x2 = y Combine like terms: 7x2 + -9x2 = -2x2 14 + -2x2 = y Solving 14 + -2x2 = y Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-14' to each side of the equation. 14 + -14 + -2x2 = -14 + y Combine like terms: 14 + -14 = 0 0 + -2x2 = -14 + y -2x2 = -14 + y Divide each side by '-2'. x2 = 7 + -0.5y Simplifying x2 = 7 + -0.5y Reorder the terms: -7 + x2 + 0.5y = 7 + -0.5y + -7 + 0.5y Reorder the terms: -7 + x2 + 0.5y = 7 + -7 + -0.5y + 0.5y Combine like terms: 7 + -7 = 0 -7 + x2 + 0.5y = 0 + -0.5y + 0.5y -7 + x2 + 0.5y = -0.5y + 0.5y Combine like terms: -0.5y + 0.5y = 0.0 -7 + x2 + 0.5y = 0.0 The solution to this equation could not be determined.
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