Question
17/21 - 2/21
lowest term
lowest term
Answers
GPT-4o mini
To simplify the expression \( \frac{17}{21} - \frac{2}{21} \):
1. Since the denominators are the same, you can subtract the numerators directly:
\[
\frac{17 - 2}{21} = \frac{15}{21}
\]
2. Now, reduce \( \frac{15}{21} \) to its lowest terms by finding the greatest common divisor (GCD) of 15 and 21, which is 3.
3. Divide both the numerator and the denominator by their GCD:
\[
\frac{15 \div 3}{21 \div 3} = \frac{5}{7}
\]
So, \( \frac{17}{21} - \frac{2}{21} \) in lowest terms is \( \frac{5}{7} \).
1. Since the denominators are the same, you can subtract the numerators directly:
\[
\frac{17 - 2}{21} = \frac{15}{21}
\]
2. Now, reduce \( \frac{15}{21} \) to its lowest terms by finding the greatest common divisor (GCD) of 15 and 21, which is 3.
3. Divide both the numerator and the denominator by their GCD:
\[
\frac{15 \div 3}{21 \div 3} = \frac{5}{7}
\]
So, \( \frac{17}{21} - \frac{2}{21} \) in lowest terms is \( \frac{5}{7} \).