Subtract 18/90 from 7/49
7/49 - 18/90 is -2/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 90 is 4410
Next, find the equivalent fraction of both fractional numbers with denominator 4410 - For the 1st fraction, since 49 × 90 = 4410,
7/49 = 7 × 90/49 × 90 = 630/4410 - Likewise, for the 2nd fraction, since 90 × 49 = 4410,
18/90 = 18 × 49/90 × 49 = 882/4410 - Subtract the two like fractions:
630/4410 - 882/4410 = 630 - 882/4410 = -252/4410 - After reducing the fraction, the answer is -2/35
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