Subtract 28/42 from 7/5, Solve 1 2/5

Subtract 28/42 from 7/5

1^st number: 1 2/5, 2^nd number: 28/42

7/5 - 28/42 is 11/15.

Find the least common denominator or LCM of the two denominators:
LCM of 5 and 42 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 5 × 42 = 210,
7/5 = 7 × 42/5 × 42 = 294/210
Likewise, for the 2nd fraction, since 42 × 5 = 210,
28/42 = 28 × 5/42 × 5 = 140/210
Subtract the two like fractions:
294/210 - 140/210 = 294 - 140/210 = 154/210
After reducing the fraction, the answer is 11/15

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