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Simplifying 7x + -3x + 12 + -5 = 4x + 8 Reorder the terms: 12 + -5 + 7x + -3x = 4x + 8 Combine like terms: 12 + -5 = 7 7 + 7x + -3x = 4x + 8 Combine like terms: 7x + -3x = 4x 7 + 4x = 4x + 8 Reorder the terms: 7 + 4x = 8 + 4x Add '-4x' to each side of the equation. 7 + 4x + -4x = 8 + 4x + -4x Combine like terms: 4x + -4x = 0 7 + 0 = 8 + 4x + -4x 7 = 8 + 4x + -4x Combine like terms: 4x + -4x = 0 7 = 8 + 0 7 = 8 Solving 7 = 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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