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Simplifying 42x + -1(-1x) = 86 Remove parenthesis around (-1x) 42x + -1 * -1x = 86 Multiply -1 * -1 42x + 1x = 86 Combine like terms: 42x + 1x = 43x 43x = 86 Solving 43x = 86 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Divide each side by '43'. x = 2 Simplifying x = 2
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