Question

What is 12/42 when you simplify it 

Answer 1

12/42 simplified are 2/7 because you divide them both by six which leads u to that  answer 
hope its helpful!!

Answer 2

First of all, to simplify a number/fraction, you must find a common multiple.
Both 12 and 42 is divisible by 6
$\frac{12}{42}$=$\frac{2}{7}$ since 6 goes into 12, two times and goes into 42, 7 times. The answer is $\frac{2}{7}$ when simplified.