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Simplifying 7a + 9 = 3 + -15a Reorder the terms: 9 + 7a = 3 + -15a Solving 9 + 7a = 3 + -15a Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '15a' to each side of the equation. 9 + 7a + 15a = 3 + -15a + 15a Combine like terms: 7a + 15a = 22a 9 + 22a = 3 + -15a + 15a Combine like terms: -15a + 15a = 0 9 + 22a = 3 + 0 9 + 22a = 3 Add '-9' to each side of the equation. 9 + -9 + 22a = 3 + -9 Combine like terms: 9 + -9 = 0 0 + 22a = 3 + -9 22a = 3 + -9 Combine like terms: 3 + -9 = -6 22a = -6 Divide each side by '22'. a = -0.2727272727 Simplifying a = -0.2727272727
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