Solve the following exercise:
42−31=?
To solve this problem, we'll follow these steps:
- Step 1: Find the common denominator for the fractions 42 and 31.
- Step 2: Convert each fraction to have the common denominator.
- Step 3: Perform the subtraction and simplify if necessary.
Now, let's work through these steps:
Step 1: The denominators are 4 and 3. The common denominator is the product 4×3=12.
Step 2: Convert each fraction:
42=4×32×3=126
31=3×41×4=124
Step 3: Subtract the fractions with a common denominator:
126−124=126−4=122
Finally, simplify 122. The greatest common divisor of 2 and 12 is 2, so:
122=12÷22÷2=61
Therefore, the solution to the problem is 61.