Question

(12/21)... what is this fraction simplified

Answer 1

$\frac{12}{21} \\ \\ GCF = 3 \\ \\ 12 \div 3 = 4 \\ \\ 21 \div 3 = 7 \\ \\ \frac{4}{7} \\ \\ Answer: \fbox {4/7}$

Answer 2

12/21 is simplified to 4/7 because the GCF of 12 and 21 is 3. 3 times 4 equals 12 and 3 times 7 equals 21.