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Simplifying 4a + 9b = 7 Solving 4a + 9b = 7 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-9b' to each side of the equation. 4a + 9b + -9b = 7 + -9b Combine like terms: 9b + -9b = 0 4a + 0 = 7 + -9b 4a = 7 + -9b Divide each side by '4'. a = 1.75 + -2.25b Simplifying a = 1.75 + -2.25b
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