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