Add 84/90 and 7/56
84/90 + 7/56 is 127/120.
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,
84/90 = 84 × 28/90 × 28 = 2352/2520 - Likewise, for the 2nd fraction, since 56 × 45 = 2520,
7/56 = 7 × 45/56 × 45 = 315/2520 - Add the two like fractions:
2352/2520 + 315/2520 = 2352 + 315/2520 = 2667/2520 - 2667/2520 simplified gives 127/120
- So, 84/90 + 7/56 = 127/120
In mixed form: 17/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/90+14/56 84/90+21/56 84/90+35/56 84/90+49/56