Add 72/45 and 8/70
1st number: 1 27/45, 2nd number: 8/70
72/45 + 8/70 is 12/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 70 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 45 × 14 = 630,
72/45 = 72 × 14/45 × 14 = 1008/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
8/70 = 8 × 9/70 × 9 = 72/630 - Add the two like fractions:
1008/630 + 72/630 = 1008 + 72/630 = 1080/630 - 1080/630 simplified gives 12/7
- So, 72/45 + 8/70 = 12/7
In mixed form: 15/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/45+16/70 72/90+8/70 72/45+24/70 72/45+40/70 72/45+56/70