Solve the following exercise:
21−82=?
To solve this problem, we'll follow these steps:
- Step 1: Find a common denominator for both fractions.
- Step 2: Convert the fractions to have the same denominator.
- Step 3: Perform the subtraction with the converted fractions.
- Step 4: Simplify the result, if needed.
Now, let's work through each step:
Step 1: The problem gives us the fractions 21 and 82. The denominator 2 can be converted to 8 (the denominator of the second fraction) by multiplying by 4.
Step 2: Convert 21 to 84, since 2×41×4=84. Now both fractions have a denominator of 8.
Step 3: Perform the subtraction: 84−82=84−2=82.
Step 4: Simplify 82 by dividing both numerator and denominator by 2: 8÷22÷2=41.
Therefore, the solution to the problem is 41.