Subtract 32/42 from 90/5, Solve 18 0/5

Subtract 32/42 from 90/5

1^st number: 18 0/5, 2^nd number: 32/42

90/5 - 32/42 is 362/21.

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,
90/5 = 90 × 42/5 × 42 = 3780/210
Likewise, for the 2nd fraction, since 42 × 5 = 210,
32/42 = 32 × 5/42 × 5 = 160/210
Subtract the two like fractions:
3780/210 - 160/210 = 3780 - 160/210 = 3620/210
After reducing the fraction, the answer is 362/21
In mixed form: 175/21

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