Add 70/30 and 10/7
1st number: 2 10/30, 2nd number: 1 3/7
70/30 + 10/7 is 79/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 7 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
70/30 = 70 × 7/30 × 7 = 490/210 - Likewise, for the 2nd fraction, since 7 × 30 = 210,
10/7 = 10 × 30/7 × 30 = 300/210 - Add the two like fractions:
490/210 + 300/210 = 490 + 300/210 = 790/210 - 790/210 simplified gives 79/21
- So, 70/30 + 10/7 = 79/21
In mixed form: 316/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/30+20/7 70/60+10/7 70/30+10/14 70/30+30/7 70/90+10/7 70/30+10/21 70/30+50/7 70/30+10/35 70/30+70/7 70/30+10/49