Add 12/49 and 21/80
12/49 + 21/80 is 1989/3920.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 80 is 3920
Next, find the equivalent fraction of both fractional numbers with denominator 3920 - For the 1st fraction, since 49 × 80 = 3920,
12/49 = 12 × 80/49 × 80 = 960/3920 - Likewise, for the 2nd fraction, since 80 × 49 = 3920,
21/80 = 21 × 49/80 × 49 = 1029/3920 - Add the two like fractions:
960/3920 + 1029/3920 = 960 + 1029/3920 = 1989/3920 - So, 12/49 + 21/80 = 1989/3920
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