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