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Simplifying 7a + 2 = 4a + 20 Reorder the terms: 2 + 7a = 4a + 20 Reorder the terms: 2 + 7a = 20 + 4a Solving 2 + 7a = 20 + 4a Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-4a' to each side of the equation. 2 + 7a + -4a = 20 + 4a + -4a Combine like terms: 7a + -4a = 3a 2 + 3a = 20 + 4a + -4a Combine like terms: 4a + -4a = 0 2 + 3a = 20 + 0 2 + 3a = 20 Add '-2' to each side of the equation. 2 + -2 + 3a = 20 + -2 Combine like terms: 2 + -2 = 0 0 + 3a = 20 + -2 3a = 20 + -2 Combine like terms: 20 + -2 = 18 3a = 18 Divide each side by '3'. a = 6 Simplifying a = 6
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