Add 70/7 and 40/20
1st number: 10 0/7, 2nd number: 2 0/20
70/7 + 40/20 is 12/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 7 × 20 = 140,
70/7 = 70 × 20/7 × 20 = 1400/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
40/20 = 40 × 7/20 × 7 = 280/140 - Add the two like fractions:
1400/140 + 280/140 = 1400 + 280/140 = 1680/140 - 1680/140 simplified gives 12/1
- So, 70/7 + 40/20 = 12/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/7+80/20 70/14+40/20 70/21+40/20 70/7+40/60 70/35+40/20 70/49+40/20