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Simplifying (18 + -1x)(15 + x) = 266 + 3x + -1x2 Multiply (18 + -1x) * (15 + x) (18(15 + x) + -1x * (15 + x)) = 266 + 3x + -1x2 ((15 * 18 + x * 18) + -1x * (15 + x)) = 266 + 3x + -1x2 ((270 + 18x) + -1x * (15 + x)) = 266 + 3x + -1x2 (270 + 18x + (15 * -1x + x * -1x)) = 266 + 3x + -1x2 (270 + 18x + (-15x + -1x2)) = 266 + 3x + -1x2 Combine like terms: 18x + -15x = 3x (270 + 3x + -1x2) = 266 + 3x + -1x2 Add '-3x' to each side of the equation. 270 + 3x + -3x + -1x2 = 266 + 3x + -3x + -1x2 Combine like terms: 3x + -3x = 0 270 + 0 + -1x2 = 266 + 3x + -3x + -1x2 270 + -1x2 = 266 + 3x + -3x + -1x2 Combine like terms: 3x + -3x = 0 270 + -1x2 = 266 + 0 + -1x2 270 + -1x2 = 266 + -1x2 Add 'x2' to each side of the equation. 270 + -1x2 + x2 = 266 + -1x2 + x2 Combine like terms: -1x2 + x2 = 0 270 + 0 = 266 + -1x2 + x2 270 = 266 + -1x2 + x2 Combine like terms: -1x2 + x2 = 0 270 = 266 + 0 270 = 266 Solving 270 = 266 Couldn't find a variable to solve for. This equation is invalid, the left and right sides are not equal, therefore there is no solution.
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