Subtract 7/8 from 20/50, Solve 20/50

Subtract 7/8 from 20/50

20/50 - 7/8 is -19/40.

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

Next, find the equivalent fraction of both fractional numbers with denominator 200
For the 1st fraction, since 50 × 4 = 200,
20/50 = 20 × 4/50 × 4 = 80/200
Likewise, for the 2nd fraction, since 8 × 25 = 200,
7/8 = 7 × 25/8 × 25 = 175/200
Subtract the two like fractions:
80/200 - 175/200 = 80 - 175/200 = -95/200
After reducing the fraction, the answer is -19/40

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