Add 21/75 and 18/45
21/75 + 18/45 is 17/25.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 45 is 225
Next, find the equivalent fraction of both fractional numbers with denominator 225 - For the 1st fraction, since 75 × 3 = 225,
21/75 = 21 × 3/75 × 3 = 63/225 - Likewise, for the 2nd fraction, since 45 × 5 = 225,
18/45 = 18 × 5/45 × 5 = 90/225 - Add the two like fractions:
63/225 + 90/225 = 63 + 90/225 = 153/225 - 153/225 simplified gives 17/25
- So, 21/75 + 18/45 = 17/25
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