Add 42/56 and 40/30
1st number: 42/56, 2nd number: 1 10/30
42/56 + 40/30 is 25/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 30 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 56 × 15 = 840,
42/56 = 42 × 15/56 × 15 = 630/840 - Likewise, for the 2nd fraction, since 30 × 28 = 840,
40/30 = 40 × 28/30 × 28 = 1120/840 - Add the two like fractions:
630/840 + 1120/840 = 630 + 1120/840 = 1750/840 - 1750/840 simplified gives 25/12
- So, 42/56 + 40/30 = 25/12
In mixed form: 21/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/56+40/30 42/56+80/30 42/56+40/60 42/56+40/90