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Simplifying 3 + -2(x + -2) = x + -18 Reorder the terms: 3 + -2(-2 + x) = x + -18 3 + (-2 * -2 + x * -2) = x + -18 3 + (4 + -2x) = x + -18 Combine like terms: 3 + 4 = 7 7 + -2x = x + -18 Reorder the terms: 7 + -2x = -18 + x Solving 7 + -2x = -18 + x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1x' to each side of the equation. 7 + -2x + -1x = -18 + x + -1x Combine like terms: -2x + -1x = -3x 7 + -3x = -18 + x + -1x Combine like terms: x + -1x = 0 7 + -3x = -18 + 0 7 + -3x = -18 Add '-7' to each side of the equation. 7 + -7 + -3x = -18 + -7 Combine like terms: 7 + -7 = 0 0 + -3x = -18 + -7 -3x = -18 + -7 Combine like terms: -18 + -7 = -25 -3x = -25 Divide each side by '-3'. x = 8.333333333 Simplifying x = 8.333333333
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