Add 21/72 and 27/7
1st number: 21/72, 2nd number: 3 6/7
21/72 + 27/7 is 697/168.
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,
27/7 = 27 × 72/7 × 72 = 1944/504 - Add the two like fractions:
147/504 + 1944/504 = 147 + 1944/504 = 2091/504 - 2091/504 simplified gives 697/168
- So, 21/72 + 27/7 = 697/168
In mixed form: 425/168
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