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Simplifying 2(a + b) = 500 (a * 2 + b * 2) = 500 (2a + 2b) = 500 Solving 2a + 2b = 500 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-2b' to each side of the equation. 2a + 2b + -2b = 500 + -2b Combine like terms: 2b + -2b = 0 2a + 0 = 500 + -2b 2a = 500 + -2b Divide each side by '2'. a = 250 + -1b Simplifying a = 250 + -1b
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