Add 21/70 and 9/48
21/70 + 9/48 is 39/80.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 48 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 70 × 24 = 1680,
21/70 = 21 × 24/70 × 24 = 504/1680 - Likewise, for the 2nd fraction, since 48 × 35 = 1680,
9/48 = 9 × 35/48 × 35 = 315/1680 - Add the two like fractions:
504/1680 + 315/1680 = 504 + 315/1680 = 819/1680 - 819/1680 simplified gives 39/80
- So, 21/70 + 9/48 = 39/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/70+9/48 21/70+18/48 21/70+9/96 63/70+9/48 21/70+27/48 21/70+45/48 21/70+63/48