21+42+63=
To solve this problem, we will simplify and add the fractions 21+42+63 step-by-step:
- Step 1: Simplify fractions where possible.
42 simplifies to 21 because the numerator and denominator can both be divided by 2.
Similarly, 63 simplifies to 21 because both the numerator and denominator are divisible by 3.
- Step 2: Add the simplified fractions.
The equation becomes 21+21+21.
- Step 3: Since all fractions now have the same denominator, they can be added directly:
Add the numerators: 1+1+1=3 and keep the denominator the same: 2.
This gives us 23.
Therefore, the solution to the problem is 23.