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Simplifying -9a2 + -12a2 = r2 Combine like terms: -9a2 + -12a2 = -21a2 -21a2 = r2 Solving -21a2 = r2 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Divide each side by '-21'. a2 = -0.04761904762r2 Simplifying a2 = -0.04761904762r2 Combine like terms: -0.04761904762r2 + 0.04761904762r2 = 0.00000000000 a2 + 0.04761904762r2 = 0.00000000000 The solution to this equation could not be determined.
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