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Simplifying 7a + 3b + -5a + b = 0 Reorder the terms: 7a + -5a + 3b + b = 0 Combine like terms: 7a + -5a = 2a 2a + 3b + b = 0 Combine like terms: 3b + b = 4b 2a + 4b = 0 Solving 2a + 4b = 0 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-4b' to each side of the equation. 2a + 4b + -4b = 0 + -4b Combine like terms: 4b + -4b = 0 2a + 0 = 0 + -4b 2a = 0 + -4b Remove the zero: 2a = -4b Divide each side by '2'. a = -2b Simplifying a = -2b
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