Add 21/70 and 48/4
1st number: 21/70, 2nd number: 12 0/4
21/70 + 48/4 is 123/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 4 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 70 × 2 = 140,
21/70 = 21 × 2/70 × 2 = 42/140 - Likewise, for the 2nd fraction, since 4 × 35 = 140,
48/4 = 48 × 35/4 × 35 = 1680/140 - Add the two like fractions:
42/140 + 1680/140 = 42 + 1680/140 = 1722/140 - 1722/140 simplified gives 123/10
- So, 21/70 + 48/4 = 123/10
In mixed form: 123/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/70+48/4 21/70+96/4 21/70+48/8 63/70+48/4 21/70+48/12 21/70+48/20 21/70+48/28