Add 49/56 and 9/90
49/56 + 9/90 is 39/40.
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,
49/56 = 49 × 45/56 × 45 = 2205/2520 - Likewise, for the 2nd fraction, since 90 × 28 = 2520,
9/90 = 9 × 28/90 × 28 = 252/2520 - Add the two like fractions:
2205/2520 + 252/2520 = 2205 + 252/2520 = 2457/2520 - 2457/2520 simplified gives 39/40
- So, 49/56 + 9/90 = 39/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/56+9/90 49/56+18/90 49/56+27/90 49/56+45/90 49/56+63/90