Add 4/90 and 60/72
4/90 + 60/72 is 79/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 90 × 4 = 360,
4/90 = 4 × 4/90 × 4 = 16/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
60/72 = 60 × 5/72 × 5 = 300/360 - Add the two like fractions:
16/360 + 300/360 = 16 + 300/360 = 316/360 - 316/360 simplified gives 79/90
- So, 4/90 + 60/72 = 79/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/90+60/72 12/90+60/72 20/90+60/72 28/90+60/72