Add 49/72 and 90/20
1st number: 49/72, 2nd number: 4 10/20
49/72 + 90/20 is 373/72.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 20 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
49/72 = 49 × 5/72 × 5 = 245/360 - Likewise, for the 2nd fraction, since 20 × 18 = 360,
90/20 = 90 × 18/20 × 18 = 1620/360 - Add the two like fractions:
245/360 + 1620/360 = 245 + 1620/360 = 1865/360 - 1865/360 simplified gives 373/72
- So, 49/72 + 90/20 = 373/72
In mixed form: 513/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/72+90/20 49/72+90/40 49/72+90/60