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Simplifying 7a + -7(4a + 2) = 0 Reorder the terms: 7a + -7(2 + 4a) = 0 7a + (2 * -7 + 4a * -7) = 0 7a + (-14 + -28a) = 0 Reorder the terms: -14 + 7a + -28a = 0 Combine like terms: 7a + -28a = -21a -14 + -21a = 0 Solving -14 + -21a = 0 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '14' to each side of the equation. -14 + 14 + -21a = 0 + 14 Combine like terms: -14 + 14 = 0 0 + -21a = 0 + 14 -21a = 0 + 14 Combine like terms: 0 + 14 = 14 -21a = 14 Divide each side by '-21'. a = -0.6666666667 Simplifying a = -0.6666666667
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