Add 42/30 and 35/56
1st number: 1 12/30, 2nd number: 35/56
42/30 + 35/56 is 81/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 56 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 30 × 28 = 840,
42/30 = 42 × 28/30 × 28 = 1176/840 - Likewise, for the 2nd fraction, since 56 × 15 = 840,
35/56 = 35 × 15/56 × 15 = 525/840 - Add the two like fractions:
1176/840 + 525/840 = 1176 + 525/840 = 1701/840 - 1701/840 simplified gives 81/40
- So, 42/30 + 35/56 = 81/40
In mixed form: 21/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/30+35/56 42/30+70/56 42/60+35/56 42/90+35/56