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Simplifying 4a + 2a + 4 = 28 Reorder the terms: 4 + 4a + 2a = 28 Combine like terms: 4a + 2a = 6a 4 + 6a = 28 Solving 4 + 6a = 28 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + 6a = 28 + -4 Combine like terms: 4 + -4 = 0 0 + 6a = 28 + -4 6a = 28 + -4 Combine like terms: 28 + -4 = 24 6a = 24 Divide each side by '6'. a = 4 Simplifying a = 4
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