Subtract 21/70 from 7/32
7/32 - 21/70 is -13/160.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 32 and 70 is 1120
Next, find the equivalent fraction of both fractional numbers with denominator 1120 - For the 1st fraction, since 32 × 35 = 1120,
7/32 = 7 × 35/32 × 35 = 245/1120 - Likewise, for the 2nd fraction, since 70 × 16 = 1120,
21/70 = 21 × 16/70 × 16 = 336/1120 - Subtract the two like fractions:
245/1120 - 336/1120 = 245 - 336/1120 = -91/1120 - After reducing the fraction, the answer is -13/160
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