Add 20/49 and 75/80
20/49 + 75/80 is 1055/784.
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,
20/49 = 20 × 80/49 × 80 = 1600/3920 - Likewise, for the 2nd fraction, since 80 × 49 = 3920,
75/80 = 75 × 49/80 × 49 = 3675/3920 - Add the two like fractions:
1600/3920 + 3675/3920 = 1600 + 3675/3920 = 5275/3920 - 5275/3920 simplified gives 1055/784
- So, 20/49 + 75/80 = 1055/784
In mixed form: 1271/784
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/49+75/80 20/98+75/80 60/49+75/80