Subtract 45/50 from 21/8, Solve 2 5/8

Subtract 45/50 from 21/8

1^st number: 2 5/8, 2^nd number: 45/50

21/8 - 45/50 is 69/40.

Find the least common denominator or LCM of the two denominators:
LCM of 8 and 50 is 200

Next, find the equivalent fraction of both fractional numbers with denominator 200
For the 1st fraction, since 8 × 25 = 200,
21/8 = 21 × 25/8 × 25 = 525/200
Likewise, for the 2nd fraction, since 50 × 4 = 200,
45/50 = 45 × 4/50 × 4 = 180/200
Subtract the two like fractions:
525/200 - 180/200 = 525 - 180/200 = 345/200
After reducing the fraction, the answer is 69/40
In mixed form: 129/40

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