Subtract 27/3 from 25/70, Solve 25/70

Subtract 27/3 from 25/70

1^st number: 25/70, 2^nd number: 9 0/3

25/70 - 27/3 is -121/14.

Find the least common denominator or LCM of the two denominators:
LCM of 70 and 3 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 70 × 3 = 210,
25/70 = 25 × 3/70 × 3 = 75/210
Likewise, for the 2nd fraction, since 3 × 70 = 210,
27/3 = 27 × 70/3 × 70 = 1890/210
Subtract the two like fractions:
75/210 - 1890/210 = 75 - 1890/210 = -1815/210
After reducing the fraction, the answer is -121/14

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