Subtract 21/32 from 40/70
40/70 - 21/32 is -19/224.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 32 is 1120
Next, find the equivalent fraction of both fractional numbers with denominator 1120 - For the 1st fraction, since 70 × 16 = 1120,
40/70 = 40 × 16/70 × 16 = 640/1120 - Likewise, for the 2nd fraction, since 32 × 35 = 1120,
21/32 = 21 × 35/32 × 35 = 735/1120 - Subtract the two like fractions:
640/1120 - 735/1120 = 640 - 735/1120 = -95/1120 - After reducing the fraction, the answer is -19/224
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