Add 90/4 and 72/70
1st number: 22 2/4, 2nd number: 1 2/70
90/4 + 72/70 is 1647/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 70 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 4 × 35 = 140,
90/4 = 90 × 35/4 × 35 = 3150/140 - Likewise, for the 2nd fraction, since 70 × 2 = 140,
72/70 = 72 × 2/70 × 2 = 144/140 - Add the two like fractions:
3150/140 + 144/140 = 3150 + 144/140 = 3294/140 - 3294/140 simplified gives 1647/70
- So, 90/4 + 72/70 = 1647/70
In mixed form: 2337/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/8+72/70 90/12+72/70 90/20+72/70 90/28+72/70