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Simplifying 7a + -4(a + -2) = 0 Reorder the terms: 7a + -4(-2 + a) = 0 7a + (-2 * -4 + a * -4) = 0 7a + (8 + -4a) = 0 Reorder the terms: 8 + 7a + -4a = 0 Combine like terms: 7a + -4a = 3a 8 + 3a = 0 Solving 8 + 3a = 0 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + 3a = 0 + -8 Combine like terms: 8 + -8 = 0 0 + 3a = 0 + -8 3a = 0 + -8 Combine like terms: 0 + -8 = -8 3a = -8 Divide each side by '3'. a = -2.666666667 Simplifying a = -2.666666667
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