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Simplifying 5x + 4 = 7(x + -1) + -2x Reorder the terms: 4 + 5x = 7(x + -1) + -2x Reorder the terms: 4 + 5x = 7(-1 + x) + -2x 4 + 5x = (-1 * 7 + x * 7) + -2x 4 + 5x = (-7 + 7x) + -2x Combine like terms: 7x + -2x = 5x 4 + 5x = -7 + 5x Add '-5x' to each side of the equation. 4 + 5x + -5x = -7 + 5x + -5x Combine like terms: 5x + -5x = 0 4 + 0 = -7 + 5x + -5x 4 = -7 + 5x + -5x Combine like terms: 5x + -5x = 0 4 = -7 + 0 4 = -7 Solving 4 = -7 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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