Add 72/70 and 28/48
1st number: 1 2/70, 2nd number: 28/48
72/70 + 28/48 is 677/420.
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,
72/70 = 72 × 24/70 × 24 = 1728/1680 - Likewise, for the 2nd fraction, since 48 × 35 = 1680,
28/48 = 28 × 35/48 × 35 = 980/1680 - Add the two like fractions:
1728/1680 + 980/1680 = 1728 + 980/1680 = 2708/1680 - 2708/1680 simplified gives 677/420
- So, 72/70 + 28/48 = 677/420
In mixed form: 1257/420
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/70+56/48 72/70+28/96 72/70+84/48