Subtract 35/28 from 12/45, Solve 12/45

Subtract 35/28 from 12/45

1^st number: 12/45, 2^nd number: 1 7/28

12/45 - 35/28 is -59/60.

Find the least common denominator or LCM of the two denominators:
LCM of 45 and 28 is 1260

Next, find the equivalent fraction of both fractional numbers with denominator 1260
For the 1st fraction, since 45 × 28 = 1260,
12/45 = 12 × 28/45 × 28 = 336/1260
Likewise, for the 2nd fraction, since 28 × 45 = 1260,
35/28 = 35 × 45/28 × 45 = 1575/1260
Subtract the two like fractions:
336/1260 - 1575/1260 = 336 - 1575/1260 = -1239/1260
After reducing the fraction, the answer is -59/60

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