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Simplifying 81a2 + -49 = 0 Reorder the terms: -49 + 81a2 = 0 Solving -49 + 81a2 = 0 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '49' to each side of the equation. -49 + 49 + 81a2 = 0 + 49 Combine like terms: -49 + 49 = 0 0 + 81a2 = 0 + 49 81a2 = 0 + 49 Combine like terms: 0 + 49 = 49 81a2 = 49 Divide each side by '81'. a2 = 0.6049382716 Simplifying a2 = 0.6049382716 Take the square root of each side: a = {-0.777777778, 0.777777778}
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