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Simplifying 8 * 5 = [b + -2a] Multiply 8 * 5 40 = [b + -2a] Reorder the terms: 40 = [-2a + b] Remove brackets around [-2a + b] 40 = -2a + b Solving 40 = -2a + b Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '2a' to each side of the equation. 40 + 2a = -2a + 2a + b Combine like terms: -2a + 2a = 0 40 + 2a = 0 + b 40 + 2a = b Add '-40' to each side of the equation. 40 + -40 + 2a = -40 + b Combine like terms: 40 + -40 = 0 0 + 2a = -40 + b 2a = -40 + b Divide each side by '2'. a = -20 + 0.5b Simplifying a = -20 + 0.5b
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