Add 72/21 and 18/75
1st number: 3 9/21, 2nd number: 18/75
72/21 + 18/75 is 642/175.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 75 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 75 × 7 = 525,
18/75 = 18 × 7/75 × 7 = 126/525 - Add the two like fractions:
1800/525 + 126/525 = 1800 + 126/525 = 1926/525 - 1926/525 simplified gives 642/175
- So, 72/21 + 18/75 = 642/175
In mixed form: 3117/175
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