Add 25/30 and 42/56
25/30 + 42/56 is 19/12.
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,
25/30 = 25 × 28/30 × 28 = 700/840 - Likewise, for the 2nd fraction, since 56 × 15 = 840,
42/56 = 42 × 15/56 × 15 = 630/840 - Add the two like fractions:
700/840 + 630/840 = 700 + 630/840 = 1330/840 - 1330/840 simplified gives 19/12
- So, 25/30 + 42/56 = 19/12
In mixed form: 17/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/30+42/56 25/30+84/56 25/60+42/56 75/30+42/56 25/90+42/56