Add 21/72 and 18/75
21/72 + 18/75 is 319/600.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 75 is 1800
Next, find the equivalent fraction of both fractional numbers with denominator 1800 - For the 1st fraction, since 72 × 25 = 1800,
21/72 = 21 × 25/72 × 25 = 525/1800 - Likewise, for the 2nd fraction, since 75 × 24 = 1800,
18/75 = 18 × 24/75 × 24 = 432/1800 - Add the two like fractions:
525/1800 + 432/1800 = 525 + 432/1800 = 957/1800 - 957/1800 simplified gives 319/600
- So, 21/72 + 18/75 = 319/600
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