Add 70/90 and 72/8
1st number: 70/90, 2nd number: 9 0/8
70/90 + 72/8 is 88/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 8 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 90 × 4 = 360,
70/90 = 70 × 4/90 × 4 = 280/360 - Likewise, for the 2nd fraction, since 8 × 45 = 360,
72/8 = 72 × 45/8 × 45 = 3240/360 - Add the two like fractions:
280/360 + 3240/360 = 280 + 3240/360 = 3520/360 - 3520/360 simplified gives 88/9
- So, 70/90 + 72/8 = 88/9
In mixed form: 97/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/90+72/16 70/90+72/24 70/90+72/40 70/90+72/56