Add 4/72 and 30/70
4/72 + 30/70 is 61/126.
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,
4/72 = 4 × 35/72 × 35 = 140/2520 - Likewise, for the 2nd fraction, since 70 × 36 = 2520,
30/70 = 30 × 36/70 × 36 = 1080/2520 - Add the two like fractions:
140/2520 + 1080/2520 = 140 + 1080/2520 = 1220/2520 - 1220/2520 simplified gives 61/126
- So, 4/72 + 30/70 = 61/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/72+30/70 4/72+60/70 12/72+30/70 4/72+90/70 20/72+30/70 28/72+30/70