Add 21/75 and 12/21
21/75 + 12/21 is 149/175.
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,
21/75 = 21 × 7/75 × 7 = 147/525 - Likewise, for the 2nd fraction, since 21 × 25 = 525,
12/21 = 12 × 25/21 × 25 = 300/525 - Add the two like fractions:
147/525 + 300/525 = 147 + 300/525 = 447/525 - 447/525 simplified gives 149/175
- So, 21/75 + 12/21 = 149/175
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