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Simplifying 42a + 5 + -31a = 27 Reorder the terms: 5 + 42a + -31a = 27 Combine like terms: 42a + -31a = 11a 5 + 11a = 27 Solving 5 + 11a = 27 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + 11a = 27 + -5 Combine like terms: 5 + -5 = 0 0 + 11a = 27 + -5 11a = 27 + -5 Combine like terms: 27 + -5 = 22 11a = 22 Divide each side by '11'. a = 2 Simplifying a = 2
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