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Simplifying 31 = -8a + 5a Combine like terms: -8a + 5a = -3a 31 = -3a Solving 31 = -3a Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '3a' to each side of the equation. 31 + 3a = -3a + 3a Combine like terms: -3a + 3a = 0 31 + 3a = 0 Add '-31' to each side of the equation. 31 + -31 + 3a = 0 + -31 Combine like terms: 31 + -31 = 0 0 + 3a = 0 + -31 3a = 0 + -31 Combine like terms: 0 + -31 = -31 3a = -31 Divide each side by '3'. a = -10.33333333 Simplifying a = -10.33333333
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