Add 15/56 and 42/30
1st number: 15/56, 2nd number: 1 12/30
15/56 + 42/30 is 467/280.
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,
15/56 = 15 × 15/56 × 15 = 225/840 - Likewise, for the 2nd fraction, since 30 × 28 = 840,
42/30 = 42 × 28/30 × 28 = 1176/840 - Add the two like fractions:
225/840 + 1176/840 = 225 + 1176/840 = 1401/840 - 1401/840 simplified gives 467/280
- So, 15/56 + 42/30 = 467/280
In mixed form: 1187/280
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/56+42/30 15/56+84/30 15/56+42/60 45/56+42/30 15/56+42/90 75/56+42/30