Add 15/21 and 30/75
15/21 + 30/75 is 39/35.
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,
15/21 = 15 × 25/21 × 25 = 375/525 - Likewise, for the 2nd fraction, since 75 × 7 = 525,
30/75 = 30 × 7/75 × 7 = 210/525 - Add the two like fractions:
375/525 + 210/525 = 375 + 210/525 = 585/525 - 585/525 simplified gives 39/35
- So, 15/21 + 30/75 = 39/35
In mixed form: 14/35
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