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Simplifying 3a2 + -21x = 0 Solving 3a2 + -21x = 0 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '21x' to each side of the equation. 3a2 + -21x + 21x = 0 + 21x Combine like terms: -21x + 21x = 0 3a2 + 0 = 0 + 21x 3a2 = 0 + 21x Remove the zero: 3a2 = 21x Divide each side by '3'. a2 = 7x Simplifying a2 = 7x Combine like terms: 7x + -7x = 0 a2 + -7x = 0 The solution to this equation could not be determined.
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