Add 1/72 and 42/70
1/72 + 42/70 is 221/360.
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,
1/72 = 1 × 35/72 × 35 = 35/2520 - Likewise, for the 2nd fraction, since 70 × 36 = 2520,
42/70 = 42 × 36/70 × 36 = 1512/2520 - Add the two like fractions:
35/2520 + 1512/2520 = 35 + 1512/2520 = 1547/2520 - 1547/2520 simplified gives 221/360
- So, 1/72 + 42/70 = 221/360
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/72+42/70 1/72+84/70 3/72+42/70 5/72+42/70 7/72+42/70