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Simplifying (63a + -21b) * 7 = 0 Reorder the terms for easier multiplication: 7(63a + -21b) = 0 (63a * 7 + -21b * 7) = 0 (441a + -147b) = 0 Solving 441a + -147b = 0 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '147b' to each side of the equation. 441a + -147b + 147b = 0 + 147b Combine like terms: -147b + 147b = 0 441a + 0 = 0 + 147b 441a = 0 + 147b Remove the zero: 441a = 147b Divide each side by '441'. a = 0.3333333333b Simplifying a = 0.3333333333b
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