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Simplifying 40a + 30b + -20 = 0 Reorder the terms: -20 + 40a + 30b = 0 Solving -20 + 40a + 30b = 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 + 40a + 20 + 30b = 0 + 20 Reorder the terms: -20 + 20 + 40a + 30b = 0 + 20 Combine like terms: -20 + 20 = 0 0 + 40a + 30b = 0 + 20 40a + 30b = 0 + 20 Combine like terms: 0 + 20 = 20 40a + 30b = 20 Add '-30b' to each side of the equation. 40a + 30b + -30b = 20 + -30b Combine like terms: 30b + -30b = 0 40a + 0 = 20 + -30b 40a = 20 + -30b Divide each side by '40'. a = 0.5 + -0.75b Simplifying a = 0.5 + -0.75b
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