Subtract 5/84 from 90/5, Solve 18 0/5

Subtract 5/84 from 90/5

1^st number: 18 0/5, 2^nd number: 5/84

90/5 - 5/84 is 1507/84.

Find the least common denominator or LCM of the two denominators:
LCM of 5 and 84 is 420

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 5 × 84 = 420,
90/5 = 90 × 84/5 × 84 = 7560/420
Likewise, for the 2nd fraction, since 84 × 5 = 420,
5/84 = 5 × 5/84 × 5 = 25/420
Subtract the two like fractions:
7560/420 - 25/420 = 7560 - 25/420 = 7535/420
After reducing the fraction, the answer is 1507/84
In mixed form: 1779/84

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