Subtract 5/21 from 6/45, Solve 6/45

Subtract 5/21 from 6/45

6/45 - 5/21 is -11/105.

Find the least common denominator or LCM of the two denominators:
LCM of 45 and 21 is 315

Next, find the equivalent fraction of both fractional numbers with denominator 315
For the 1st fraction, since 45 × 7 = 315,
6/45 = 6 × 7/45 × 7 = 42/315
Likewise, for the 2nd fraction, since 21 × 15 = 315,
5/21 = 5 × 15/21 × 15 = 75/315
Subtract the two like fractions:
42/315 - 75/315 = 42 - 75/315 = -33/315
After reducing the fraction, the answer is -11/105

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