Subtract 1/35 from 90/84, Solve 1 6/84

Subtract 1/35 from 90/84

1^st number: 1 6/84, 2^nd number: 1/35

90/84 - 1/35 is 73/70.

Find the least common denominator or LCM of the two denominators:
LCM of 84 and 35 is 420

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 84 × 5 = 420,
90/84 = 90 × 5/84 × 5 = 450/420
Likewise, for the 2nd fraction, since 35 × 12 = 420,
1/35 = 1 × 12/35 × 12 = 12/420
Subtract the two like fractions:
450/420 - 12/420 = 450 - 12/420 = 438/420
After reducing the fraction, the answer is 73/70
In mixed form: 13/70

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