Subtract 4/32 from 90/25, Solve 3 15/25

Subtract 4/32 from 90/25

1^st number: 3 15/25, 2^nd number: 4/32

90/25 - 4/32 is 139/40.

Find the least common denominator or LCM of the two denominators:
LCM of 25 and 32 is 800

Next, find the equivalent fraction of both fractional numbers with denominator 800
For the 1st fraction, since 25 × 32 = 800,
90/25 = 90 × 32/25 × 32 = 2880/800
Likewise, for the 2nd fraction, since 32 × 25 = 800,
4/32 = 4 × 25/32 × 25 = 100/800
Subtract the two like fractions:
2880/800 - 100/800 = 2880 - 100/800 = 2780/800
After reducing the fraction, the answer is 139/40
In mixed form: 319/40

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