Add 9/30 and 10/80
9/30 + 10/80 is 17/40.
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,
9/30 = 9 × 8/30 × 8 = 72/240 - Likewise, for the 2nd fraction, since 80 × 3 = 240,
10/80 = 10 × 3/80 × 3 = 30/240 - Add the two like fractions:
72/240 + 30/240 = 72 + 30/240 = 102/240 - 102/240 simplified gives 17/40
- So, 9/30 + 10/80 = 17/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/30+10/80 9/30+20/80 9/60+10/80 27/30+10/80 9/30+30/80 9/90+10/80 45/30+10/80 9/30+50/80 63/30+10/80 9/30+70/80