Add 5/70 and 45/72
5/70 + 45/72 is 39/56.
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,
5/70 = 5 × 36/70 × 36 = 180/2520 - Likewise, for the 2nd fraction, since 72 × 35 = 2520,
45/72 = 45 × 35/72 × 35 = 1575/2520 - Add the two like fractions:
180/2520 + 1575/2520 = 180 + 1575/2520 = 1755/2520 - 1755/2520 simplified gives 39/56
- So, 5/70 + 45/72 = 39/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/70+45/72 5/70+90/72 15/70+45/72 25/70+45/72 35/70+45/72