Subtract 42/63 from 4/45, Solve 4/45

Subtract 42/63 from 4/45

4/45 - 42/63 is -26/45.

Find the least common denominator or LCM of the two denominators:
LCM of 45 and 63 is 315

Next, find the equivalent fraction of both fractional numbers with denominator 315
For the 1st fraction, since 45 × 7 = 315,
4/45 = 4 × 7/45 × 7 = 28/315
Likewise, for the 2nd fraction, since 63 × 5 = 315,
42/63 = 42 × 5/63 × 5 = 210/315
Subtract the two like fractions:
28/315 - 210/315 = 28 - 210/315 = -182/315
After reducing the fraction, the answer is -26/45

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