Add 21/56 and 5/45
21/56 + 5/45 is 35/72.
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,
21/56 = 21 × 45/56 × 45 = 945/2520 - Likewise, for the 2nd fraction, since 45 × 56 = 2520,
5/45 = 5 × 56/45 × 56 = 280/2520 - Add the two like fractions:
945/2520 + 280/2520 = 945 + 280/2520 = 1225/2520 - 1225/2520 simplified gives 35/72
- So, 21/56 + 5/45 = 35/72
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