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Simplifying -12a2 + -1(-4a2 + 7) = 0 Reorder the terms: -12a2 + -1(7 + -4a2) = 0 -12a2 + (7 * -1 + -4a2 * -1) = 0 -12a2 + (-7 + 4a2) = 0 Reorder the terms: -7 + -12a2 + 4a2 = 0 Combine like terms: -12a2 + 4a2 = -8a2 -7 + -8a2 = 0 Solving -7 + -8a2 = 0 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + -8a2 = 0 + 7 Combine like terms: -7 + 7 = 0 0 + -8a2 = 0 + 7 -8a2 = 0 + 7 Combine like terms: 0 + 7 = 7 -8a2 = 7 Divide each side by '-8'. a2 = -0.875 Simplifying a2 = -0.875 Reorder the terms: 0.875 + a2 = -0.875 + 0.875 Combine like terms: -0.875 + 0.875 = 0.000 0.875 + a2 = 0.000 The solution to this equation could not be determined.
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