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Simplifying 7 + 2x = x + -4(2 + x) 7 + 2x = x + (2 * -4 + x * -4) 7 + 2x = x + (-8 + -4x) Reorder the terms: 7 + 2x = -8 + x + -4x Combine like terms: x + -4x = -3x 7 + 2x = -8 + -3x Solving 7 + 2x = -8 + -3x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3x' to each side of the equation. 7 + 2x + 3x = -8 + -3x + 3x Combine like terms: 2x + 3x = 5x 7 + 5x = -8 + -3x + 3x Combine like terms: -3x + 3x = 0 7 + 5x = -8 + 0 7 + 5x = -8 Add '-7' to each side of the equation. 7 + -7 + 5x = -8 + -7 Combine like terms: 7 + -7 = 0 0 + 5x = -8 + -7 5x = -8 + -7 Combine like terms: -8 + -7 = -15 5x = -15 Divide each side by '5'. x = -3 Simplifying x = -3
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