Subtract 16/90 from 21/72
21/72 - 16/90 is 41/360.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 90 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
21/72 = 21 × 5/72 × 5 = 105/360 - Likewise, for the 2nd fraction, since 90 × 4 = 360,
16/90 = 16 × 4/90 × 4 = 64/360 - Subtract the two like fractions:
105/360 - 64/360 = 105 - 64/360 = 41/360
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