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Simplifying x + -4(2 + x) = 7 + -3 x + (2 * -4 + x * -4) = 7 + -3 x + (-8 + -4x) = 7 + -3 Reorder the terms: -8 + x + -4x = 7 + -3 Combine like terms: x + -4x = -3x -8 + -3x = 7 + -3 Combine like terms: 7 + -3 = 4 -8 + -3x = 4 Solving -8 + -3x = 4 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '8' to each side of the equation. -8 + 8 + -3x = 4 + 8 Combine like terms: -8 + 8 = 0 0 + -3x = 4 + 8 -3x = 4 + 8 Combine like terms: 4 + 8 = 12 -3x = 12 Divide each side by '-3'. x = -4 Simplifying x = -4
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