Add 72/21 and 42/25
1st number: 3 9/21, 2nd number: 1 17/25
72/21 + 42/25 is 894/175.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 25 is 525
Next, find the equivalent fraction of both fractional numbers with denominator 525 - For the 1st fraction, since 21 × 25 = 525,
72/21 = 72 × 25/21 × 25 = 1800/525 - Likewise, for the 2nd fraction, since 25 × 21 = 525,
42/25 = 42 × 21/25 × 21 = 882/525 - Add the two like fractions:
1800/525 + 882/525 = 1800 + 882/525 = 2682/525 - 2682/525 simplified gives 894/175
- So, 72/21 + 42/25 = 894/175
In mixed form: 519/175
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