Add 4/72 and 21/7
1st number: 4/72, 2nd number: 3 0/7
4/72 + 21/7 is 55/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 7 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 72 × 7 = 504,
4/72 = 4 × 7/72 × 7 = 28/504 - Likewise, for the 2nd fraction, since 7 × 72 = 504,
21/7 = 21 × 72/7 × 72 = 1512/504 - Add the two like fractions:
28/504 + 1512/504 = 28 + 1512/504 = 1540/504 - 1540/504 simplified gives 55/18
- So, 4/72 + 21/7 = 55/18
In mixed form: 31/18
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