Subtract 90/70 from 16/40
1st number: 16/40, 2nd number: 1 20/70
16/40 - 90/70 is -31/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 70 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 40 × 7 = 280,
16/40 = 16 × 7/40 × 7 = 112/280 - Likewise, for the 2nd fraction, since 70 × 4 = 280,
90/70 = 90 × 4/70 × 4 = 360/280 - Subtract the two like fractions:
112/280 - 360/280 = 112 - 360/280 = -248/280 - After reducing the fraction, the answer is -31/35
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