Add 7/30 and 30/80
7/30 + 30/80 is 73/120.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 80 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 30 × 8 = 240,
7/30 = 7 × 8/30 × 8 = 56/240 - Likewise, for the 2nd fraction, since 80 × 3 = 240,
30/80 = 30 × 3/80 × 3 = 90/240 - Add the two like fractions:
56/240 + 90/240 = 56 + 90/240 = 146/240 - 146/240 simplified gives 73/120
- So, 7/30 + 30/80 = 73/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/30+30/80 7/30+60/80 7/60+30/80 21/30+30/80 7/30+90/80 7/90+30/80 35/30+30/80 49/30+30/80