Subtract 15/12 from 90/35, Solve 2 20/35

Subtract 15/12 from 90/35

1^st number: 2 20/35, 2^nd number: 1 3/12

90/35 - 15/12 is 37/28.

Find the least common denominator or LCM of the two denominators:
LCM of 35 and 12 is 420

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 35 × 12 = 420,
90/35 = 90 × 12/35 × 12 = 1080/420
Likewise, for the 2nd fraction, since 12 × 35 = 420,
15/12 = 15 × 35/12 × 35 = 525/420
Subtract the two like fractions:
1080/420 - 525/420 = 1080 - 525/420 = 555/420
After reducing the fraction, the answer is 37/28
In mixed form: 19/28

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