Subtract 4/72 from 1/25, Solve 1/25

Subtract 4/72 from 1/25

1/25 - 4/72 is -7/450.

Find the least common denominator or LCM of the two denominators:
LCM of 25 and 72 is 1800

Next, find the equivalent fraction of both fractional numbers with denominator 1800
For the 1st fraction, since 25 × 72 = 1800,
1/25 = 1 × 72/25 × 72 = 72/1800
Likewise, for the 2nd fraction, since 72 × 25 = 1800,
4/72 = 4 × 25/72 × 25 = 100/1800
Subtract the two like fractions:
72/1800 - 100/1800 = 72 - 100/1800 = -28/1800
After reducing the fraction, the answer is -7/450

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