Subtracting Rational Expressions with the Same Denominator
Subtracting rational expressions with the same denominator is like subtracting fractions with the same denominator.
Procedure â€” To Subtract Rational Expressions with the Same Denominator
Step 1 Subtract the numerators. Write the difference as the numerator over the common denominator.
Step 2 Reduce to lowest terms.
Hereâ€™s an example of subtracting fractions:
Subtract and write the answer in lowest terms:
The denominators are the same.
Subtract the numerators and write the difference over the common denominator, 6.
To reduce, cancel the common factor, 2, in the numerator and denominator.