Add 15/56 and 30/45
15/56 + 30/45 is 157/168.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 45 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 56 × 45 = 2520,
15/56 = 15 × 45/56 × 45 = 675/2520 - Likewise, for the 2nd fraction, since 45 × 56 = 2520,
30/45 = 30 × 56/45 × 56 = 1680/2520 - Add the two like fractions:
675/2520 + 1680/2520 = 675 + 1680/2520 = 2355/2520 - 2355/2520 simplified gives 157/168
- So, 15/56 + 30/45 = 157/168
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/56+30/45 15/56+60/45 15/56+30/90 45/56+30/45 15/56+90/45 75/56+30/45