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Simplifying 20 + 3a = 2a Solving 20 + 3a = 2a Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-2a' to each side of the equation. 20 + 3a + -2a = 2a + -2a Combine like terms: 3a + -2a = 1a 20 + 1a = 2a + -2a Combine like terms: 2a + -2a = 0 20 + 1a = 0 Add '-20' to each side of the equation. 20 + -20 + 1a = 0 + -20 Combine like terms: 20 + -20 = 0 0 + 1a = 0 + -20 1a = 0 + -20 Combine like terms: 0 + -20 = -20 1a = -20 Divide each side by '1'. a = -20 Simplifying a = -20
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