Add 8/90 and 72/70
1st number: 8/90, 2nd number: 1 2/70
8/90 + 72/70 is 352/315.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 70 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 90 × 7 = 630,
8/90 = 8 × 7/90 × 7 = 56/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
72/70 = 72 × 9/70 × 9 = 648/630 - Add the two like fractions:
56/630 + 648/630 = 56 + 648/630 = 704/630 - 704/630 simplified gives 352/315
- So, 8/90 + 72/70 = 352/315
In mixed form: 137/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/90+72/70 24/90+72/70 40/90+72/70 56/90+72/70