Add 2/21 and 45/72
2/21 + 45/72 is 121/168.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 21 × 24 = 504,
2/21 = 2 × 24/21 × 24 = 48/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
45/72 = 45 × 7/72 × 7 = 315/504 - Add the two like fractions:
48/504 + 315/504 = 48 + 315/504 = 363/504 - 363/504 simplified gives 121/168
- So, 2/21 + 45/72 = 121/168
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