21+43+86=
To solve this problem, we will add the fractions 21, 43, and 86 by first converting each to have a common denominator:
Step 1: Find the Least Common Denominator (LCD). The denominators are 2, 4, and 8. The LCM of these numbers is 8.
Step 2: Rewrite each fraction with the denominator of 8.
- 21=2×41×4=84
- 43=4×23×2=86
- 86 is already expressed with a denominator of 8.
Step 3: Add the fractions:
84+86+86=84+6+6=816
Step 4: Simplify the fraction:
816=2
Therefore, the sum of the fractions 21+43+86=2.