Add 64/70 and 70/42
1st number: 64/70, 2nd number: 1 28/42
64/70 + 70/42 is 271/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 70 × 3 = 210,
64/70 = 64 × 3/70 × 3 = 192/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
70/42 = 70 × 5/42 × 5 = 350/210 - Add the two like fractions:
192/210 + 350/210 = 192 + 350/210 = 542/210 - 542/210 simplified gives 271/105
- So, 64/70 + 70/42 = 271/105
In mixed form: 261/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 64/70+70/84