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Simplifying 6.5(7 + 4.5a) = 15.5 (7 * 6.5 + 4.5a * 6.5) = 15.5 (45.5 + 29.25a) = 15.5 Solving 45.5 + 29.25a = 15.5 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-45.5' to each side of the equation. 45.5 + -45.5 + 29.25a = 15.5 + -45.5 Combine like terms: 45.5 + -45.5 = 0.0 0.0 + 29.25a = 15.5 + -45.5 29.25a = 15.5 + -45.5 Combine like terms: 15.5 + -45.5 = -30 29.25a = -30 Divide each side by '29.25'. a = -1.025641026 Simplifying a = -1.025641026
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