Subtract 18/32 from 21/35
21/35 - 18/32 is 3/80.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 32 is 1120
Next, find the equivalent fraction of both fractional numbers with denominator 1120 - For the 1st fraction, since 35 × 32 = 1120,
21/35 = 21 × 32/35 × 32 = 672/1120 - Likewise, for the 2nd fraction, since 32 × 35 = 1120,
18/32 = 18 × 35/32 × 35 = 630/1120 - Subtract the two like fractions:
672/1120 - 630/1120 = 672 - 630/1120 = 42/1120 - After reducing the fraction, the answer is 3/80
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