Add 7/30 and 8/72
7/30 + 8/72 is 31/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 30 × 12 = 360,
7/30 = 7 × 12/30 × 12 = 84/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
8/72 = 8 × 5/72 × 5 = 40/360 - Add the two like fractions:
84/360 + 40/360 = 84 + 40/360 = 124/360 - 124/360 simplified gives 31/90
- So, 7/30 + 8/72 = 31/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/30+8/72 7/30+16/72 7/60+8/72 21/30+8/72 7/30+24/72 7/90+8/72 35/30+8/72 7/30+40/72 49/30+8/72 7/30+56/72