Subtract 21/14 from 2/45, Solve 2/45

Subtract 21/14 from 2/45

1^st number: 2/45, 2^nd number: 1 7/14

2/45 - 21/14 is -131/90.

Find the least common denominator or LCM of the two denominators:
LCM of 45 and 14 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 45 × 14 = 630,
2/45 = 2 × 14/45 × 14 = 28/630
Likewise, for the 2nd fraction, since 14 × 45 = 630,
21/14 = 21 × 45/14 × 45 = 945/630
Subtract the two like fractions:
28/630 - 945/630 = 28 - 945/630 = -917/630
After reducing the fraction, the answer is -131/90

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