Add 49/70 and 28/72
49/70 + 28/72 is 49/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 72 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 70 × 36 = 2520,
49/70 = 49 × 36/70 × 36 = 1764/2520 - Likewise, for the 2nd fraction, since 72 × 35 = 2520,
28/72 = 28 × 35/72 × 35 = 980/2520 - Add the two like fractions:
1764/2520 + 980/2520 = 1764 + 980/2520 = 2744/2520 - 2744/2520 simplified gives 49/45
- So, 49/70 + 28/72 = 49/45
In mixed form: 14/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/70+28/72 49/70+56/72 49/70+84/72