Subtract 2/7 from 5/90, Solve 5/90

Subtract 2/7 from 5/90

5/90 - 2/7 is -29/126.

Find the least common denominator or LCM of the two denominators:
LCM of 90 and 7 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 90 × 7 = 630,
5/90 = 5 × 7/90 × 7 = 35/630
Likewise, for the 2nd fraction, since 7 × 90 = 630,
2/7 = 2 × 90/7 × 90 = 180/630
Subtract the two like fractions:
35/630 - 180/630 = 35 - 180/630 = -145/630
After reducing the fraction, the answer is -29/126

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