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Simplifying 13 + 2x = 91 Solving 13 + 2x = 91 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-13' to each side of the equation. 13 + -13 + 2x = 91 + -13 Combine like terms: 13 + -13 = 0 0 + 2x = 91 + -13 2x = 91 + -13 Combine like terms: 91 + -13 = 78 2x = 78 Divide each side by '2'. x = 39 Simplifying x = 39
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