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Answers for “为什么乘以 5/5 或 4/4 能保持分数等价?”

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To verify an ordered pair solves a linear equation with fractions, substitute the xx and yy values into the left-hand side of the equation. Evaluate the products by multiplying each fraction by its corresponding integer.

Conditions: The candidate solution values must already be known.; The equation being checked contains those variables with fractional coefficients.