Find the value of a. \qquad(-1-5n+an^2)-(7n-4n^2+9)=12n^2-12n-10

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Simplify Left Side: Step Title: Simplify the Left Side of the Equation Concise Step Description: Combine like terms on the left side of the equation. Step Calculation: (-1 - 5n + an^2) - (7n - 4n^2 + 9) = -1 - 5n + an^2 - 7n + 4n^2 - 9 Step Output: Simplified Left Side: an^2 - 12n + (4n^2) - 10Simplify Right Side: Step Title: Simplify the Right Side of the Equation Concise Step Description: The right side of the equation is already simplified. Step Calculation: No calculation needed. Step Output: Simplified Right Side: 12n^2 - 12n - 10Set Equal: Step Title: Set the Left Side Equal to the Right Side Concise Step Description: Set the simplified left side of the equation equal to the simplified right side. Step Calculation: an^2 - 12n + 4n^2 - 10 = 12n^2 - 12n - 10 Step Output: Equation Set: an^2 + 4n^2 - 12n - 10 = 12n^2 - 12n - 10Combine Like Terms: Step Title: Combine Like Terms on Both Sides Concise Step Description: Combine like terms on both sides to isolate the variable a. Step Calculation: an^2 + 4n^2 = 12n^2 and -12n = -12n and -10 = -10 Step Output: Combined Like Terms: an^2 + 4n^2 = 12n^2Solve for a: Step Title: Solve for a Concise Step Description: Isolate the variable a by subtracting 4n^2 from both sides of the equation. Step Calculation: an^2 + 4n^2 - 4n^2 = 12n^2 - 4n^2 Step Output: Isolated Variable: an^2 = 8n^2Divide by n^2: Step Title: Divide by n^2 Concise Step Description: Divide both sides of the equation by n^2 to solve for a. Step Calculation: an^2 / n^2 = 8n^2 / n^2 Step Output: Solved for a: a = 8

Find the value of $a$ . $\newline$ $\qquad(-1-5n+an^2)-(7n-4n^2+9)=12n^2-12n-10$

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Find the value of aaa.\newline(−1−5n+an2)−(7n−4n2+9)=12n2−12n−10\qquad(-1-5n+an^2)-(7n-4n^2+9)=12n^2-12n-10(−1−5n+an2)−(7n−4n2+9)=12n2−12n−10

Find the value of $a$ . $\newline$ $\qquad(-1-5n+an^2)-(7n-4n^2+9)=12n^2-12n-10$