Add 21/7 and 45/50
1st number: 3 0/7, 2nd number: 45/50
21/7 + 45/50 is 39/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 50 is 350
Next, find the equivalent fraction of both fractional numbers with denominator 350 - For the 1st fraction, since 7 × 50 = 350,
21/7 = 21 × 50/7 × 50 = 1050/350 - Likewise, for the 2nd fraction, since 50 × 7 = 350,
45/50 = 45 × 7/50 × 7 = 315/350 - Add the two like fractions:
1050/350 + 315/350 = 1050 + 315/350 = 1365/350 - 1365/350 simplified gives 39/10
- So, 21/7 + 45/50 = 39/10
In mixed form: 39/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/7+45/50 21/7+90/50 21/14+45/50 63/7+45/50 21/35+45/50 21/49+45/50