Subtract 7/20 from 90/16, Solve 5 10/16

Subtract 7/20 from 90/16

1^st number: 5 10/16, 2^nd number: 7/20

90/16 - 7/20 is 211/40.

Find the least common denominator or LCM of the two denominators:
LCM of 16 and 20 is 80

Next, find the equivalent fraction of both fractional numbers with denominator 80
For the 1st fraction, since 16 × 5 = 80,
90/16 = 90 × 5/16 × 5 = 450/80
Likewise, for the 2nd fraction, since 20 × 4 = 80,
7/20 = 7 × 4/20 × 4 = 28/80
Subtract the two like fractions:
450/80 - 28/80 = 450 - 28/80 = 422/80
After reducing the fraction, the answer is 211/40
In mixed form: 511/40

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