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Simplifying 2a + 15 + -4b = 0 Reorder the terms: 15 + 2a + -4b = 0 Solving 15 + 2a + -4b = 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 + 2a + -15 + -4b = 0 + -15 Reorder the terms: 15 + -15 + 2a + -4b = 0 + -15 Combine like terms: 15 + -15 = 0 0 + 2a + -4b = 0 + -15 2a + -4b = 0 + -15 Combine like terms: 0 + -15 = -15 2a + -4b = -15 Add '4b' to each side of the equation. 2a + -4b + 4b = -15 + 4b Combine like terms: -4b + 4b = 0 2a + 0 = -15 + 4b 2a = -15 + 4b Divide each side by '2'. a = -7.5 + 2b Simplifying a = -7.5 + 2b
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