Add 21/80 and 12/98
21/80 + 12/98 is 1509/3920.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 98 is 3920
Next, find the equivalent fraction of both fractional numbers with denominator 3920 - For the 1st fraction, since 80 × 49 = 3920,
21/80 = 21 × 49/80 × 49 = 1029/3920 - Likewise, for the 2nd fraction, since 98 × 40 = 3920,
12/98 = 12 × 40/98 × 40 = 480/3920 - Add the two like fractions:
1029/3920 + 480/3920 = 1029 + 480/3920 = 1509/3920 - So, 21/80 + 12/98 = 1509/3920
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