Subtract 90/50 from 20/8, Solve 2 4/8

Subtract 90/50 from 20/8

1^st number: 2 4/8, 2^nd number: 1 40/50

20/8 - 90/50 is 7/10.

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,
20/8 = 20 × 25/8 × 25 = 500/200
Likewise, for the 2nd fraction, since 50 × 4 = 200,
90/50 = 90 × 4/50 × 4 = 360/200
Subtract the two like fractions:
500/200 - 360/200 = 500 - 360/200 = 140/200
After reducing the fraction, the answer is 7/10

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