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Simplifying 7a2 + 9a = 0 Reorder the terms: 9a + 7a2 = 0 Solving 9a + 7a2 = 0 Solving for variable 'a'. Factor out the Greatest Common Factor (GCF), 'a'. a(9 + 7a) = 0Subproblem 1
Set the factor 'a' equal to zero and attempt to solve: Simplifying a = 0 Solving a = 0 Move all terms containing a to the left, all other terms to the right. Simplifying a = 0Subproblem 2
Set the factor '(9 + 7a)' equal to zero and attempt to solve: Simplifying 9 + 7a = 0 Solving 9 + 7a = 0 Move all terms containing a to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + 7a = 0 + -9 Combine like terms: 9 + -9 = 0 0 + 7a = 0 + -9 7a = 0 + -9 Combine like terms: 0 + -9 = -9 7a = -9 Divide each side by '7'. a = -1.285714286 Simplifying a = -1.285714286Solution
a = {0, -1.285714286}
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