Add 42/30 and 7/56
1st number: 1 12/30, 2nd number: 7/56
42/30 + 7/56 is 61/40.
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,
7/56 = 7 × 15/56 × 15 = 105/840 - Add the two like fractions:
1176/840 + 105/840 = 1176 + 105/840 = 1281/840 - 1281/840 simplified gives 61/40
- So, 42/30 + 7/56 = 61/40
In mixed form: 121/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/30+7/56 42/30+14/56 42/60+7/56 42/30+21/56 42/90+7/56 42/30+35/56 42/30+49/56