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Simplifying 63 = 3x + -12 Reorder the terms: 63 = -12 + 3x Solving 63 = -12 + 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. 63 + -3x = -12 + 3x + -3x Combine like terms: 3x + -3x = 0 63 + -3x = -12 + 0 63 + -3x = -12 Add '-63' to each side of the equation. 63 + -63 + -3x = -12 + -63 Combine like terms: 63 + -63 = 0 0 + -3x = -12 + -63 -3x = -12 + -63 Combine like terms: -12 + -63 = -75 -3x = -75 Divide each side by '-3'. x = 25 Simplifying x = 25
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