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Simplifying 21a + 24 = 0 Reorder the terms: 24 + 21a = 0 Solving 24 + 21a = 0 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-24' to each side of the equation. 24 + -24 + 21a = 0 + -24 Combine like terms: 24 + -24 = 0 0 + 21a = 0 + -24 21a = 0 + -24 Combine like terms: 0 + -24 = -24 21a = -24 Divide each side by '21'. a = -1.142857143 Simplifying a = -1.142857143
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