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Simplifying 4 + -3x2 + -9x + -7 + x2 = -2x2 + -9x + 8 Reorder the terms: 4 + -7 + -9x + -3x2 + x2 = -2x2 + -9x + 8 Combine like terms: 4 + -7 = -3 -3 + -9x + -3x2 + x2 = -2x2 + -9x + 8 Combine like terms: -3x2 + x2 = -2x2 -3 + -9x + -2x2 = -2x2 + -9x + 8 Reorder the terms: -3 + -9x + -2x2 = 8 + -9x + -2x2 Add '9x' to each side of the equation. -3 + -9x + 9x + -2x2 = 8 + -9x + 9x + -2x2 Combine like terms: -9x + 9x = 0 -3 + 0 + -2x2 = 8 + -9x + 9x + -2x2 -3 + -2x2 = 8 + -9x + 9x + -2x2 Combine like terms: -9x + 9x = 0 -3 + -2x2 = 8 + 0 + -2x2 -3 + -2x2 = 8 + -2x2 Add '2x2' to each side of the equation. -3 + -2x2 + 2x2 = 8 + -2x2 + 2x2 Combine like terms: -2x2 + 2x2 = 0 -3 + 0 = 8 + -2x2 + 2x2 -3 = 8 + -2x2 + 2x2 Combine like terms: -2x2 + 2x2 = 0 -3 = 8 + 0 -3 = 8 Solving -3 = 8 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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