Add 7/56 and 42/90
7/56 + 42/90 is 71/120.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 90 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 56 × 45 = 2520,
7/56 = 7 × 45/56 × 45 = 315/2520 - Likewise, for the 2nd fraction, since 90 × 28 = 2520,
42/90 = 42 × 28/90 × 28 = 1176/2520 - Add the two like fractions:
315/2520 + 1176/2520 = 315 + 1176/2520 = 1491/2520 - 1491/2520 simplified gives 71/120
- So, 7/56 + 42/90 = 71/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/56+42/90 7/56+84/90 21/56+42/90 35/56+42/90 49/56+42/90