Q. Evaluate the expression shown below and write your answer as a fraction in simplest form.81−121Answer:
Find Common Denominator: Find a common denominator for the fractions81 and 121. The least common multiple (LCM) of 8 and 12 is 24, so the common denominator will be 24.
Convert to Equivalent Fractions: Convert each fraction to an equivalent fraction with the common denominator of 24. For 81, multiply the numerator and denominator by 3 to get 243. For 121, multiply the numerator and denominator by 2 to get 242.
Subtract Fractions: Subtract the two fractions with the common denominator.(243)−(242)=(243−2)=241
Check for Simplification: Check if the resulting fraction can be simplified further.Since 1 is the numerator and there are no common factors between 1 and 24, the fraction is already in its simplest form.