Add 72/20 and 8/70
1st number: 3 12/20, 2nd number: 8/70
72/20 + 8/70 is 26/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 70 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
72/20 = 72 × 7/20 × 7 = 504/140 - Likewise, for the 2nd fraction, since 70 × 2 = 140,
8/70 = 8 × 2/70 × 2 = 16/140 - Add the two like fractions:
504/140 + 16/140 = 504 + 16/140 = 520/140 - 520/140 simplified gives 26/7
- So, 72/20 + 8/70 = 26/7
In mixed form: 35/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/20+16/70 72/40+8/70 72/20+24/70 72/60+8/70 72/20+40/70 72/20+56/70