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Simplifying 7 + -7x = 142 + -42x Solving 7 + -7x = 142 + -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. 7 + -7x + 42x = 142 + -42x + 42x Combine like terms: -7x + 42x = 35x 7 + 35x = 142 + -42x + 42x Combine like terms: -42x + 42x = 0 7 + 35x = 142 + 0 7 + 35x = 142 Add '-7' to each side of the equation. 7 + -7 + 35x = 142 + -7 Combine like terms: 7 + -7 = 0 0 + 35x = 142 + -7 35x = 142 + -7 Combine like terms: 142 + -7 = 135 35x = 135 Divide each side by '35'. x = 3.857142857 Simplifying x = 3.857142857
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