Medium
Express 2/42 in its lowest terms.
Explanation
Explanation
The HCF of 2 and 42 is 2. Dividing numerator and denominator by 2 gives 2/42 = 1/21, which is in lowest terms since the new numerator and denominator share no common factor other than 1.
PRO TIP
Re-check your working by substituting the answer back into the original question.