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Simplifying 7x + -86 = 145 + -4x Reorder the terms: -86 + 7x = 145 + -4x Solving -86 + 7x = 145 + -4x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4x' to each side of the equation. -86 + 7x + 4x = 145 + -4x + 4x Combine like terms: 7x + 4x = 11x -86 + 11x = 145 + -4x + 4x Combine like terms: -4x + 4x = 0 -86 + 11x = 145 + 0 -86 + 11x = 145 Add '86' to each side of the equation. -86 + 86 + 11x = 145 + 86 Combine like terms: -86 + 86 = 0 0 + 11x = 145 + 86 11x = 145 + 86 Combine like terms: 145 + 86 = 231 11x = 231 Divide each side by '11'. x = 21 Simplifying x = 21
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