Add 90/70 and 15/24
1st number: 1 20/70, 2nd number: 15/24
90/70 + 15/24 is 107/56.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 24 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 70 × 12 = 840,
90/70 = 90 × 12/70 × 12 = 1080/840 - Likewise, for the 2nd fraction, since 24 × 35 = 840,
15/24 = 15 × 35/24 × 35 = 525/840 - Add the two like fractions:
1080/840 + 525/840 = 1080 + 525/840 = 1605/840 - 1605/840 simplified gives 107/56
- So, 90/70 + 15/24 = 107/56
In mixed form: 151/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/70+30/24 90/70+15/48 90/70+45/24 90/70+15/72 90/70+75/24