Subtract 90/70 from 3/8
1st number: 3/8, 2nd number: 1 20/70
3/8 - 90/70 is -51/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 70 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 8 × 35 = 280,
3/8 = 3 × 35/8 × 35 = 105/280 - Likewise, for the 2nd fraction, since 70 × 4 = 280,
90/70 = 90 × 4/70 × 4 = 360/280 - Subtract the two like fractions:
105/280 - 360/280 = 105 - 360/280 = -255/280 - After reducing the fraction, the answer is -51/56
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