Add 50/75 and 70/21
1st number: 50/75, 2nd number: 3 7/21
50/75 + 70/21 is 4/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 21 is 525
Next, find the equivalent fraction of both fractional numbers with denominator 525 - For the 1st fraction, since 75 × 7 = 525,
50/75 = 50 × 7/75 × 7 = 350/525 - Likewise, for the 2nd fraction, since 21 × 25 = 525,
70/21 = 70 × 25/21 × 25 = 1750/525 - Add the two like fractions:
350/525 + 1750/525 = 350 + 1750/525 = 2100/525 - 2100/525 simplified gives 4/1
- So, 50/75 + 70/21 = 4/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/75+70/42 50/75+70/63