Q. Evaluate the expression shown below and write your answer as a fraction in simplest form.21−41Answer:
Identify Common Denominator: Identify a common denominator for the fractions(21) and (41). The least common denominator (LCD) for 2 and 4 is 4.
Convert Fractions: Convert the fractions to have the same denominator.(21) can be written as (42) because (21)×(22)=(42).(41) already has the denominator 4, so it remains the same.
Subtract Fractions: Subtract the fractions now that they have a common denominator.(42)−(41)=42−1
Perform Subtraction: Perform the subtraction in the numerator. 2−1=1
Write Result: Write the result as a fraction.The result of the subtraction is (41).