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Simplifying 142 = (3x) + (2x + 10) + x Reorder the terms: 142 = (3x) + (10 + 2x) + x Remove parenthesis around (10 + 2x) 142 = (3x) + 10 + 2x + x Reorder the terms: 142 = 10 + (3x) + 2x + x Combine like terms: (3x) + 2x = 5x 142 = 10 + 5x + x Combine like terms: 5x + x = 6x 142 = 10 + 6x Solving 142 = 10 + 6x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-6x' to each side of the equation. 142 + -6x = 10 + 6x + -6x Combine like terms: 6x + -6x = 0 142 + -6x = 10 + 0 142 + -6x = 10 Add '-142' to each side of the equation. 142 + -142 + -6x = 10 + -142 Combine like terms: 142 + -142 = 0 0 + -6x = 10 + -142 -6x = 10 + -142 Combine like terms: 10 + -142 = -132 -6x = -132 Divide each side by '-6'. x = 22 Simplifying x = 22
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