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Simplifying 3a + -15 = 3 + -4a Reorder the terms: -15 + 3a = 3 + -4a Solving -15 + 3a = 3 + -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. -15 + 3a + 4a = 3 + -4a + 4a Combine like terms: 3a + 4a = 7a -15 + 7a = 3 + -4a + 4a Combine like terms: -4a + 4a = 0 -15 + 7a = 3 + 0 -15 + 7a = 3 Add '15' to each side of the equation. -15 + 15 + 7a = 3 + 15 Combine like terms: -15 + 15 = 0 0 + 7a = 3 + 15 7a = 3 + 15 Combine like terms: 3 + 15 = 18 7a = 18 Divide each side by '7'. a = 2.571428571 Simplifying a = 2.571428571
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