Subtract 9/90 from 25/16, Solve 1 9/16

Subtract 9/90 from 25/16

1^st number: 1 9/16, 2^nd number: 9/90

25/16 - 9/90 is 117/80.

Find the least common denominator or LCM of the two denominators:
LCM of 16 and 90 is 720

Next, find the equivalent fraction of both fractional numbers with denominator 720
For the 1st fraction, since 16 × 45 = 720,
25/16 = 25 × 45/16 × 45 = 1125/720
Likewise, for the 2nd fraction, since 90 × 8 = 720,
9/90 = 9 × 8/90 × 8 = 72/720
Subtract the two like fractions:
1125/720 - 72/720 = 1125 - 72/720 = 1053/720
After reducing the fraction, the answer is 117/80
In mixed form: 137/80

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