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Simplifying -5(-7x + 8) + 7x = 86 Reorder the terms: -5(8 + -7x) + 7x = 86 (8 * -5 + -7x * -5) + 7x = 86 (-40 + 35x) + 7x = 86 Combine like terms: 35x + 7x = 42x -40 + 42x = 86 Solving -40 + 42x = 86 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '40' to each side of the equation. -40 + 40 + 42x = 86 + 40 Combine like terms: -40 + 40 = 0 0 + 42x = 86 + 40 42x = 86 + 40 Combine like terms: 86 + 40 = 126 42x = 126 Divide each side by '42'. x = 3 Simplifying x = 3
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