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Simplifying 7 + 3x = 2(-1x + 5) + -18 Reorder the terms: 7 + 3x = 2(5 + -1x) + -18 7 + 3x = (5 * 2 + -1x * 2) + -18 7 + 3x = (10 + -2x) + -18 Reorder the terms: 7 + 3x = 10 + -18 + -2x Combine like terms: 10 + -18 = -8 7 + 3x = -8 + -2x Solving 7 + 3x = -8 + -2x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2x' to each side of the equation. 7 + 3x + 2x = -8 + -2x + 2x Combine like terms: 3x + 2x = 5x 7 + 5x = -8 + -2x + 2x Combine like terms: -2x + 2x = 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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