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Simplifying 3 + 5a = 7 + 4a Solving 3 + 5a = 7 + 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. 3 + 5a + -4a = 7 + 4a + -4a Combine like terms: 5a + -4a = 1a 3 + 1a = 7 + 4a + -4a Combine like terms: 4a + -4a = 0 3 + 1a = 7 + 0 3 + 1a = 7 Add '-3' to each side of the equation. 3 + -3 + 1a = 7 + -3 Combine like terms: 3 + -3 = 0 0 + 1a = 7 + -3 1a = 7 + -3 Combine like terms: 7 + -3 = 4 1a = 4 Divide each side by '1'. a = 4 Simplifying a = 4
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