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Simplifying 9a + 7b + 15 = 0 Reorder the terms: 15 + 9a + 7b = 0 Solving 15 + 9a + 7b = 0 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-15' to each side of the equation. 15 + 9a + -15 + 7b = 0 + -15 Reorder the terms: 15 + -15 + 9a + 7b = 0 + -15 Combine like terms: 15 + -15 = 0 0 + 9a + 7b = 0 + -15 9a + 7b = 0 + -15 Combine like terms: 0 + -15 = -15 9a + 7b = -15 Add '-7b' to each side of the equation. 9a + 7b + -7b = -15 + -7b Combine like terms: 7b + -7b = 0 9a + 0 = -15 + -7b 9a = -15 + -7b Divide each side by '9'. a = -1.666666667 + -0.7777777778b Simplifying a = -1.666666667 + -0.7777777778b
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