Subtract 16/20 from 18/35
18/35 - 16/20 is -2/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 35 × 4 = 140,
18/35 = 18 × 4/35 × 4 = 72/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
16/20 = 16 × 7/20 × 7 = 112/140 - Subtract the two like fractions:
72/140 - 112/140 = 72 - 112/140 = -40/140 - After reducing the fraction, the answer is -2/7
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