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Simplifying a = 3a + 9b Solving a = 3a + 9b Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-3a' to each side of the equation. a + -3a = 3a + -3a + 9b Combine like terms: a + -3a = -2a -2a = 3a + -3a + 9b Combine like terms: 3a + -3a = 0 -2a = 0 + 9b -2a = 9b Divide each side by '-2'. a = -4.5b Simplifying a = -4.5b
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