Subtract 90/40 from 84/70
1st number: 1 14/70, 2nd number: 2 10/40
84/70 - 90/40 is -21/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 70 × 4 = 280,
84/70 = 84 × 4/70 × 4 = 336/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
90/40 = 90 × 7/40 × 7 = 630/280 - Subtract the two like fractions:
336/280 - 630/280 = 336 - 630/280 = -294/280 - After reducing the fraction, the answer is -21/20
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