Add 72/42 and 84/64
1st number: 1 30/42, 2nd number: 1 20/64
72/42 + 84/64 is 339/112.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 64 is 1344
Next, find the equivalent fraction of both fractional numbers with denominator 1344 - For the 1st fraction, since 42 × 32 = 1344,
72/42 = 72 × 32/42 × 32 = 2304/1344 - Likewise, for the 2nd fraction, since 64 × 21 = 1344,
84/64 = 84 × 21/64 × 21 = 1764/1344 - Add the two like fractions:
2304/1344 + 1764/1344 = 2304 + 1764/1344 = 4068/1344 - 4068/1344 simplified gives 339/112
- So, 72/42 + 84/64 = 339/112
In mixed form: 33/112
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Related: 72/84+84/64