Subtract 24/42 from 90/5, Solve 18 0/5

Subtract 24/42 from 90/5

1^st number: 18 0/5, 2^nd number: 24/42

90/5 - 24/42 is 122/7.

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,
24/42 = 24 × 5/42 × 5 = 120/210
Subtract the two like fractions:
3780/210 - 120/210 = 3780 - 120/210 = 3660/210
After reducing the fraction, the answer is 122/7
In mixed form: 173/7

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