Add 56/42 and 7/90
1st number: 1 14/42, 2nd number: 7/90
56/42 + 7/90 is 127/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 42 × 15 = 630,
56/42 = 56 × 15/42 × 15 = 840/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
7/90 = 7 × 7/90 × 7 = 49/630 - Add the two like fractions:
840/630 + 49/630 = 840 + 49/630 = 889/630 - 889/630 simplified gives 127/90
- So, 56/42 + 7/90 = 127/90
In mixed form: 137/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/42+14/90 56/84+7/90 56/42+21/90 56/42+35/90 56/42+49/90