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Simplifying 12x + -4(x + -5) = 8x + 4 Reorder the terms: 12x + -4(-5 + x) = 8x + 4 12x + (-5 * -4 + x * -4) = 8x + 4 12x + (20 + -4x) = 8x + 4 Reorder the terms: 20 + 12x + -4x = 8x + 4 Combine like terms: 12x + -4x = 8x 20 + 8x = 8x + 4 Reorder the terms: 20 + 8x = 4 + 8x Add '-8x' to each side of the equation. 20 + 8x + -8x = 4 + 8x + -8x Combine like terms: 8x + -8x = 0 20 + 0 = 4 + 8x + -8x 20 = 4 + 8x + -8x Combine like terms: 8x + -8x = 0 20 = 4 + 0 20 = 4 Solving 20 = 4 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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