If there are more than two rational expressions, we find their difference by rewriting all expressions in equivalent forms using the Response area of denominators, so they have Response area denominators. Then we subtract Response area from left to right, remembering to correctly Response area the “minus” sign.
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If there are more than two rational expressions, we find their difference by rewriting all expressions in equivalent forms using the LCD (least common denominator), so they have the same denominator. Then we subtract numerator from left to right, remembering to correctly distribute the "minus" sign.
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