Subtract 21/35 from 32/72
32/72 - 21/35 is -7/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 35 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 72 × 35 = 2520,
32/72 = 32 × 35/72 × 35 = 1120/2520 - Likewise, for the 2nd fraction, since 35 × 72 = 2520,
21/35 = 21 × 72/35 × 72 = 1512/2520 - Subtract the two like fractions:
1120/2520 - 1512/2520 = 1120 - 1512/2520 = -392/2520 - After reducing the fraction, the answer is -7/45
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