Subtract 9/40 from 28/90
28/90 - 9/40 is 31/360.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 90 × 4 = 360,
28/90 = 28 × 4/90 × 4 = 112/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
9/40 = 9 × 9/40 × 9 = 81/360 - Subtract the two like fractions:
112/360 - 81/360 = 112 - 81/360 = 31/360
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