Add 80/30 and 63/42
1st number: 2 20/30, 2nd number: 1 21/42
80/30 + 63/42 is 25/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
80/30 = 80 × 7/30 × 7 = 560/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
63/42 = 63 × 5/42 × 5 = 315/210 - Add the two like fractions:
560/210 + 315/210 = 560 + 315/210 = 875/210 - 875/210 simplified gives 25/6
- So, 80/30 + 63/42 = 25/6
In mixed form: 41/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/60+63/42 80/30+63/84 80/90+63/42