Add 12/48 and 21/70
12/48 + 21/70 is 11/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 48 and 70 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 48 × 35 = 1680,
12/48 = 12 × 35/48 × 35 = 420/1680 - Likewise, for the 2nd fraction, since 70 × 24 = 1680,
21/70 = 21 × 24/70 × 24 = 504/1680 - Add the two like fractions:
420/1680 + 504/1680 = 420 + 504/1680 = 924/1680 - 924/1680 simplified gives 11/20
- So, 12/48 + 21/70 = 11/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/48+21/70 12/48+42/70 12/96+21/70 36/48+21/70 12/48+63/70 60/48+21/70 84/48+21/70