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Simplifying 7 + -3x = x + -4(2 + x) 7 + -3x = x + (2 * -4 + x * -4) 7 + -3x = x + (-8 + -4x) Reorder the terms: 7 + -3x = -8 + x + -4x Combine like terms: x + -4x = -3x 7 + -3x = -8 + -3x Add '3x' to each side of the equation. 7 + -3x + 3x = -8 + -3x + 3x Combine like terms: -3x + 3x = 0 7 + 0 = -8 + -3x + 3x 7 = -8 + -3x + 3x Combine like terms: -3x + 3x = 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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