Add 3/70 and 54/21
1st number: 3/70, 2nd number: 2 12/21
3/70 + 54/21 is 183/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 21 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 70 × 3 = 210,
3/70 = 3 × 3/70 × 3 = 9/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
54/21 = 54 × 10/21 × 10 = 540/210 - Add the two like fractions:
9/210 + 540/210 = 9 + 540/210 = 549/210 - 549/210 simplified gives 183/70
- So, 3/70 + 54/21 = 183/70
In mixed form: 243/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/70+54/21 3/70+54/42 9/70+54/21 3/70+54/63 15/70+54/21 21/70+54/21