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Simplifying 7a + 3b + -2a + 4b = 0 Reorder the terms: 7a + -2a + 3b + 4b = 0 Combine like terms: 7a + -2a = 5a 5a + 3b + 4b = 0 Combine like terms: 3b + 4b = 7b 5a + 7b = 0 Solving 5a + 7b = 0 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-7b' to each side of the equation. 5a + 7b + -7b = 0 + -7b Combine like terms: 7b + -7b = 0 5a + 0 = 0 + -7b 5a = 0 + -7b Remove the zero: 5a = -7b Divide each side by '5'. a = -1.4b Simplifying a = -1.4b
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