Add 70/90 and 15/49
70/90 + 15/49 is 478/441.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 49 is 4410
Next, find the equivalent fraction of both fractional numbers with denominator 4410 - For the 1st fraction, since 90 × 49 = 4410,
70/90 = 70 × 49/90 × 49 = 3430/4410 - Likewise, for the 2nd fraction, since 49 × 90 = 4410,
15/49 = 15 × 90/49 × 90 = 1350/4410 - Add the two like fractions:
3430/4410 + 1350/4410 = 3430 + 1350/4410 = 4780/4410 - 4780/4410 simplified gives 478/441
- So, 70/90 + 15/49 = 478/441
In mixed form: 137/441
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/90+30/49 70/90+15/98 70/90+45/49 70/90+75/49