Add 72/49 and 12/40
1st number: 1 23/49, 2nd number: 12/40
72/49 + 12/40 is 867/490.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 40 is 1960
Next, find the equivalent fraction of both fractional numbers with denominator 1960 - For the 1st fraction, since 49 × 40 = 1960,
72/49 = 72 × 40/49 × 40 = 2880/1960 - Likewise, for the 2nd fraction, since 40 × 49 = 1960,
12/40 = 12 × 49/40 × 49 = 588/1960 - Add the two like fractions:
2880/1960 + 588/1960 = 2880 + 588/1960 = 3468/1960 - 3468/1960 simplified gives 867/490
- So, 72/49 + 12/40 = 867/490
In mixed form: 1377/490
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/49+24/40 72/98+12/40 72/49+12/80 72/49+36/40 72/49+60/40 72/49+84/40