Subtract 40/6 from 90/70
1st number: 1 20/70, 2nd number: 6 4/6
90/70 - 40/6 is -113/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 6 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 70 × 3 = 210,
90/70 = 90 × 3/70 × 3 = 270/210 - Likewise, for the 2nd fraction, since 6 × 35 = 210,
40/6 = 40 × 35/6 × 35 = 1400/210 - Subtract the two like fractions:
270/210 - 1400/210 = 270 - 1400/210 = -1130/210 - After reducing the fraction, the answer is -113/21
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