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Simplifying 3b + 4a + 20 = 0 Reorder the terms: 20 + 4a + 3b = 0 Solving 20 + 4a + 3b = 0 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-20' to each side of the equation. 20 + 4a + -20 + 3b = 0 + -20 Reorder the terms: 20 + -20 + 4a + 3b = 0 + -20 Combine like terms: 20 + -20 = 0 0 + 4a + 3b = 0 + -20 4a + 3b = 0 + -20 Combine like terms: 0 + -20 = -20 4a + 3b = -20 Add '-3b' to each side of the equation. 4a + 3b + -3b = -20 + -3b Combine like terms: 3b + -3b = 0 4a + 0 = -20 + -3b 4a = -20 + -3b Divide each side by '4'. a = -5 + -0.75b Simplifying a = -5 + -0.75b
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