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Simplifying 2a + -20.4 = 20.5 Reorder the terms: -20.4 + 2a = 20.5 Solving -20.4 + 2a = 20.5 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '20.4' to each side of the equation. -20.4 + 20.4 + 2a = 20.5 + 20.4 Combine like terms: -20.4 + 20.4 = 0.0 0.0 + 2a = 20.5 + 20.4 2a = 20.5 + 20.4 Combine like terms: 20.5 + 20.4 = 40.9 2a = 40.9 Divide each side by '2'. a = 20.45 Simplifying a = 20.45
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