Add 72/70 and 10/40
1st number: 1 2/70, 2nd number: 10/40
72/70 + 10/40 is 179/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 70 × 4 = 280,
72/70 = 72 × 4/70 × 4 = 288/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
10/40 = 10 × 7/40 × 7 = 70/280 - Add the two like fractions:
288/280 + 70/280 = 288 + 70/280 = 358/280 - 358/280 simplified gives 179/140
- So, 72/70 + 10/40 = 179/140
In mixed form: 139/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/70+20/40 72/70+10/80 72/70+30/40 72/70+50/40 72/70+70/40