Subtract 20/42 from 35/15, Solve 2 5/15

Subtract 20/42 from 35/15

1^st number: 2 5/15, 2^nd number: 20/42

35/15 - 20/42 is 13/7.

Find the least common denominator or LCM of the two denominators:
LCM of 15 and 42 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 15 × 14 = 210,
35/15 = 35 × 14/15 × 14 = 490/210
Likewise, for the 2nd fraction, since 42 × 5 = 210,
20/42 = 20 × 5/42 × 5 = 100/210
Subtract the two like fractions:
490/210 - 100/210 = 490 - 100/210 = 390/210
After reducing the fraction, the answer is 13/7
In mixed form: 16/7

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