Subtract 70/12 from 20/25, Solve 20/25

Subtract 70/12 from 20/25

1^st number: 20/25, 2^nd number: 5 10/12

20/25 - 70/12 is -151/30.

Find the least common denominator or LCM of the two denominators:
LCM of 25 and 12 is 300

Next, find the equivalent fraction of both fractional numbers with denominator 300
For the 1st fraction, since 25 × 12 = 300,
20/25 = 20 × 12/25 × 12 = 240/300
Likewise, for the 2nd fraction, since 12 × 25 = 300,
70/12 = 70 × 25/12 × 25 = 1750/300
Subtract the two like fractions:
240/300 - 1750/300 = 240 - 1750/300 = -1510/300
After reducing the fraction, the answer is -151/30

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