Subtract 7/81 from 30/35, Solve 30/35

Subtract 7/81 from 30/35

30/35 - 7/81 is 437/567.

Find the least common denominator or LCM of the two denominators:
LCM of 35 and 81 is 2835

Next, find the equivalent fraction of both fractional numbers with denominator 2835
For the 1st fraction, since 35 × 81 = 2835,
30/35 = 30 × 81/35 × 81 = 2430/2835
Likewise, for the 2nd fraction, since 81 × 35 = 2835,
7/81 = 7 × 35/81 × 35 = 245/2835
Subtract the two like fractions:
2430/2835 - 245/2835 = 2430 - 245/2835 = 2185/2835
After reducing the fraction, the answer is 437/567

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