Subtract 28/49 from 40/90
40/90 - 28/49 is -8/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 49 is 4410
Next, find the equivalent fraction of both fractional numbers with denominator 4410 - For the 1st fraction, since 90 × 49 = 4410,
40/90 = 40 × 49/90 × 49 = 1960/4410 - Likewise, for the 2nd fraction, since 49 × 90 = 4410,
28/49 = 28 × 90/49 × 90 = 2520/4410 - Subtract the two like fractions:
1960/4410 - 2520/4410 = 1960 - 2520/4410 = -560/4410 - After reducing the fraction, the answer is -8/63
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