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Simplifying 4.5(5 + -1a) = 49.5 (5 * 4.5 + -1a * 4.5) = 49.5 (22.5 + -4.5a) = 49.5 Solving 22.5 + -4.5a = 49.5 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-22.5' to each side of the equation. 22.5 + -22.5 + -4.5a = 49.5 + -22.5 Combine like terms: 22.5 + -22.5 = 0.0 0.0 + -4.5a = 49.5 + -22.5 -4.5a = 49.5 + -22.5 Combine like terms: 49.5 + -22.5 = 27 -4.5a = 27 Divide each side by '-4.5'. a = -6 Simplifying a = -6
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