Add 45/15 and 56/42
1st number: 3 0/15, 2nd number: 1 14/42
45/15 + 56/42 is 13/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 15 × 14 = 210,
45/15 = 45 × 14/15 × 14 = 630/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
56/42 = 56 × 5/42 × 5 = 280/210 - Add the two like fractions:
630/210 + 280/210 = 630 + 280/210 = 910/210 - 910/210 simplified gives 13/3
- So, 45/15 + 56/42 = 13/3
In mixed form: 41/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/15+56/42 45/30+56/42 45/15+56/84 45/75+56/42