Add 1/90 and 72/56
1st number: 1/90, 2nd number: 1 16/56
1/90 + 72/56 is 817/630.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 56 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 90 × 28 = 2520,
1/90 = 1 × 28/90 × 28 = 28/2520 - Likewise, for the 2nd fraction, since 56 × 45 = 2520,
72/56 = 72 × 45/56 × 45 = 3240/2520 - Add the two like fractions:
28/2520 + 3240/2520 = 28 + 3240/2520 = 3268/2520 - 3268/2520 simplified gives 817/630
- So, 1/90 + 72/56 = 817/630
In mixed form: 1187/630
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/90+72/56 3/90+72/56 5/90+72/56 7/90+72/56