Subtract 90/70 from 28/30
1st number: 28/30, 2nd number: 1 20/70
28/30 - 90/70 is -37/105.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
28/30 = 28 × 7/30 × 7 = 196/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
90/70 = 90 × 3/70 × 3 = 270/210 - Subtract the two like fractions:
196/210 - 270/210 = 196 - 270/210 = -74/210 - After reducing the fraction, the answer is -37/105
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