Add 28/72 and 4/70
28/72 + 4/70 is 281/630.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 70 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 72 × 35 = 2520,
28/72 = 28 × 35/72 × 35 = 980/2520 - Likewise, for the 2nd fraction, since 70 × 36 = 2520,
4/70 = 4 × 36/70 × 36 = 144/2520 - Add the two like fractions:
980/2520 + 144/2520 = 980 + 144/2520 = 1124/2520 - 1124/2520 simplified gives 281/630
- So, 28/72 + 4/70 = 281/630
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/72+4/70 28/72+8/70 84/72+4/70 28/72+12/70 28/72+20/70 28/72+28/70