Add 40/30 and 72/10
1st number: 1 10/30, 2nd number: 7 2/10
40/30 + 72/10 is 128/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 10 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 30 × 1 = 30,
40/30 = 40 × 1/30 × 1 = 40/30 - Likewise, for the 2nd fraction, since 10 × 3 = 30,
72/10 = 72 × 3/10 × 3 = 216/30 - Add the two like fractions:
40/30 + 216/30 = 40 + 216/30 = 256/30 - 256/30 simplified gives 128/15
- So, 40/30 + 72/10 = 128/15
In mixed form: 88/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/30+72/10 40/60+72/10 40/30+72/20 40/90+72/10 40/30+72/30 40/30+72/50 40/30+72/70