Subtract 90/49 from 21/15
1st number: 1 6/15, 2nd number: 1 41/49
21/15 - 90/49 is -107/245.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 49 is 735
Next, find the equivalent fraction of both fractional numbers with denominator 735 - For the 1st fraction, since 15 × 49 = 735,
21/15 = 21 × 49/15 × 49 = 1029/735 - Likewise, for the 2nd fraction, since 49 × 15 = 735,
90/49 = 90 × 15/49 × 15 = 1350/735 - Subtract the two like fractions:
1029/735 - 1350/735 = 1029 - 1350/735 = -321/735 - After reducing the fraction, the answer is -107/245
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