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Simplifying 7(a2 + b) + -4(a2 + b) = 0 (a2 * 7 + b * 7) + -4(a2 + b) = 0 (7a2 + 7b) + -4(a2 + b) = 0 7a2 + 7b + (a2 * -4 + b * -4) = 0 7a2 + 7b + (-4a2 + -4b) = 0 Reorder the terms: 7a2 + -4a2 + 7b + -4b = 0 Combine like terms: 7a2 + -4a2 = 3a2 3a2 + 7b + -4b = 0 Combine like terms: 7b + -4b = 3b 3a2 + 3b = 0 Solving 3a2 + 3b = 0 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-3b' to each side of the equation. 3a2 + 3b + -3b = 0 + -3b Combine like terms: 3b + -3b = 0 3a2 + 0 = 0 + -3b 3a2 = 0 + -3b Remove the zero: 3a2 = -3b Divide each side by '3'. a2 = -1b Simplifying a2 = -1b Combine like terms: -1b + b = 0 a2 + b = 0 The solution to this equation could not be determined.
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