Add 25/75 and 15/21
25/75 + 15/21 is 22/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 21 is 525
Next, find the equivalent fraction of both fractional numbers with denominator 525 - For the 1st fraction, since 75 × 7 = 525,
25/75 = 25 × 7/75 × 7 = 175/525 - Likewise, for the 2nd fraction, since 21 × 25 = 525,
15/21 = 15 × 25/21 × 25 = 375/525 - Add the two like fractions:
175/525 + 375/525 = 175 + 375/525 = 550/525 - 550/525 simplified gives 22/21
- So, 25/75 + 15/21 = 22/21
In mixed form: 11/21
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