Subtract 30/14 from 27/90, Solve 27/90

Subtract 30/14 from 27/90

1^st number: 27/90, 2^nd number: 2 2/14

27/90 - 30/14 is -129/70.

Find the least common denominator or LCM of the two denominators:
LCM of 90 and 14 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 90 × 7 = 630,
27/90 = 27 × 7/90 × 7 = 189/630
Likewise, for the 2nd fraction, since 14 × 45 = 630,
30/14 = 30 × 45/14 × 45 = 1350/630
Subtract the two like fractions:
189/630 - 1350/630 = 189 - 1350/630 = -1161/630
After reducing the fraction, the answer is -129/70

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