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Answers for “为什么在清除该特定系统的分数后首选消元法?”

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To clear fractions from a linear equation with rational coefficients, first find the least common multiple (LCM) of all the denominators in that equation. Then, multiply every term in the equation by this common denominator.

Conditions: The equation is linear.; The coefficients are rational numbers (fractions).; Each equation in a system is processed separately using its own common denominator.