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Simplifying 126 = 2(14x) + 2(7x) Remove parenthesis around (14x) 126 = 2 * 14x + 2(7x) Multiply 2 * 14 126 = 28x + 2(7x) Remove parenthesis around (7x) 126 = 28x + 2 * 7x Multiply 2 * 7 126 = 28x + 14x Combine like terms: 28x + 14x = 42x 126 = 42x Solving 126 = 42x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-42x' to each side of the equation. 126 + -42x = 42x + -42x Combine like terms: 42x + -42x = 0 126 + -42x = 0 Add '-126' to each side of the equation. 126 + -126 + -42x = 0 + -126 Combine like terms: 126 + -126 = 0 0 + -42x = 0 + -126 -42x = 0 + -126 Combine like terms: 0 + -126 = -126 -42x = -126 Divide each side by '-42'. x = 3 Simplifying x = 3
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