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Simplifying -31 = 5 + 9a Solving -31 = 5 + 9a Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-9a' to each side of the equation. -31 + -9a = 5 + 9a + -9a Combine like terms: 9a + -9a = 0 -31 + -9a = 5 + 0 -31 + -9a = 5 Add '31' to each side of the equation. -31 + 31 + -9a = 5 + 31 Combine like terms: -31 + 31 = 0 0 + -9a = 5 + 31 -9a = 5 + 31 Combine like terms: 5 + 31 = 36 -9a = 36 Divide each side by '-9'. a = -4 Simplifying a = -4
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