Subtract 42/90 from 4/2, Solve 2 0/2

Subtract 42/90 from 4/2

1^st number: 2 0/2, 2^nd number: 42/90

4/2 - 42/90 is 23/15.

Find the least common denominator or LCM of the two denominators:
LCM of 2 and 90 is 90

Next, find the equivalent fraction of both fractional numbers with denominator 90
For the 1st fraction, since 2 × 45 = 90,
4/2 = 4 × 45/2 × 45 = 180/90
Likewise, for the 2nd fraction, since 90 × 1 = 90,
42/90 = 42 × 1/90 × 1 = 42/90
Subtract the two like fractions:
180/90 - 42/90 = 180 - 42/90 = 138/90
After reducing the fraction, the answer is 23/15
In mixed form: 18/15

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