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Simplifying 12a + -15 = 7a + 2 Reorder the terms: -15 + 12a = 7a + 2 Reorder the terms: -15 + 12a = 2 + 7a Solving -15 + 12a = 2 + 7a Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-7a' to each side of the equation. -15 + 12a + -7a = 2 + 7a + -7a Combine like terms: 12a + -7a = 5a -15 + 5a = 2 + 7a + -7a Combine like terms: 7a + -7a = 0 -15 + 5a = 2 + 0 -15 + 5a = 2 Add '15' to each side of the equation. -15 + 15 + 5a = 2 + 15 Combine like terms: -15 + 15 = 0 0 + 5a = 2 + 15 5a = 2 + 15 Combine like terms: 2 + 15 = 17 5a = 17 Divide each side by '5'. a = 3.4 Simplifying a = 3.4
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