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Simplifying b + 2a + 4 = 0 Reorder the terms: 4 + 2a + b = 0 Solving 4 + 2a + b = 0 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + 2a + -4 + b = 0 + -4 Reorder the terms: 4 + -4 + 2a + b = 0 + -4 Combine like terms: 4 + -4 = 0 0 + 2a + b = 0 + -4 2a + b = 0 + -4 Combine like terms: 0 + -4 = -4 2a + b = -4 Add '-1b' to each side of the equation. 2a + b + -1b = -4 + -1b Combine like terms: b + -1b = 0 2a + 0 = -4 + -1b 2a = -4 + -1b Divide each side by '2'. a = -2 + -0.5b Simplifying a = -2 + -0.5b
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