Subtract 21/45 from 16/49
16/49 - 21/45 is -103/735.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 45 is 2205
Next, find the equivalent fraction of both fractional numbers with denominator 2205 - For the 1st fraction, since 49 × 45 = 2205,
16/49 = 16 × 45/49 × 45 = 720/2205 - Likewise, for the 2nd fraction, since 45 × 49 = 2205,
21/45 = 21 × 49/45 × 49 = 1029/2205 - Subtract the two like fractions:
720/2205 - 1029/2205 = 720 - 1029/2205 = -309/2205 - After reducing the fraction, the answer is -103/735
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