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Simplifying 45 + 2a = 85 Solving 45 + 2a = 85 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-45' to each side of the equation. 45 + -45 + 2a = 85 + -45 Combine like terms: 45 + -45 = 0 0 + 2a = 85 + -45 2a = 85 + -45 Combine like terms: 85 + -45 = 40 2a = 40 Divide each side by '2'. a = 20 Simplifying a = 20
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