Add 21/72 and 42/7
1st number: 21/72, 2nd number: 6 0/7
21/72 + 42/7 is 151/24.
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,
21/72 = 21 × 7/72 × 7 = 147/504 - Likewise, for the 2nd fraction, since 7 × 72 = 504,
42/7 = 42 × 72/7 × 72 = 3024/504 - Add the two like fractions:
147/504 + 3024/504 = 147 + 3024/504 = 3171/504 - 3171/504 simplified gives 151/24
- So, 21/72 + 42/7 = 151/24
In mixed form: 67/24
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