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Simplifying 9 = 4a + 2b Solving 9 = 4a + 2b Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-4a' to each side of the equation. 9 + -4a = 4a + -4a + 2b Combine like terms: 4a + -4a = 0 9 + -4a = 0 + 2b 9 + -4a = 2b Add '-9' to each side of the equation. 9 + -9 + -4a = -9 + 2b Combine like terms: 9 + -9 = 0 0 + -4a = -9 + 2b -4a = -9 + 2b Divide each side by '-4'. a = 2.25 + -0.5b Simplifying a = 2.25 + -0.5b
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