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Simplifying 21a + 14 = 0 Reorder the terms: 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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