Add 60/42 and 21/72
1st number: 1 18/42, 2nd number: 21/72
60/42 + 21/72 is 289/168.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 42 × 12 = 504,
60/42 = 60 × 12/42 × 12 = 720/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
21/72 = 21 × 7/72 × 7 = 147/504 - Add the two like fractions:
720/504 + 147/504 = 720 + 147/504 = 867/504 - 867/504 simplified gives 289/168
- So, 60/42 + 21/72 = 289/168
In mixed form: 1121/168
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