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Simplifying 120 + 7X = 147 + 4X Solving 120 + 7X = 147 + 4X Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '-4X' to each side of the equation. 120 + 7X + -4X = 147 + 4X + -4X Combine like terms: 7X + -4X = 3X 120 + 3X = 147 + 4X + -4X Combine like terms: 4X + -4X = 0 120 + 3X = 147 + 0 120 + 3X = 147 Add '-120' to each side of the equation. 120 + -120 + 3X = 147 + -120 Combine like terms: 120 + -120 = 0 0 + 3X = 147 + -120 3X = 147 + -120 Combine like terms: 147 + -120 = 27 3X = 27 Divide each side by '3'. X = 9 Simplifying X = 9
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