63+42−121=
To solve the problem, follow these steps:
- Step 1: Convert each fraction to have a common denominator.
- Step 2: Add and subtract the fractions.
- Step 3: Simplify the result.
Let's work through these steps:
Step 1: Find the Least Common Denominator (LCD) of the fractions involved. The denominators are 6, 4, and 12. The LCM of these numbers is 12, so the LCD is 12.
Convert each fraction to this common denominator:
- 63 becomes 6×23×2=126
- 42 becomes 4×32×3=126
- 121 remains 121
Step 2: Perform the operations using these equivalent fractions:
126+126−121=126+6−1=1211
Step 3: Check if the result can be simplified further. In this case, 1211 is already in simplest form.
Therefore, the solution to the problem is 1211.