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