Subtract 2/28 from 7/90, Solve 7/90

Subtract 2/28 from 7/90

7/90 - 2/28 is 2/315.

Find the least common denominator or LCM of the two denominators:
LCM of 90 and 28 is 1260

Next, find the equivalent fraction of both fractional numbers with denominator 1260
For the 1st fraction, since 90 × 14 = 1260,
7/90 = 7 × 14/90 × 14 = 98/1260
Likewise, for the 2nd fraction, since 28 × 45 = 1260,
2/28 = 2 × 45/28 × 45 = 90/1260
Subtract the two like fractions:
98/1260 - 90/1260 = 98 - 90/1260 = 8/1260
After reducing the fraction, the answer is 2/315

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