Subtract 72/63 from 48/90, Solve 48/90

Subtract 72/63 from 48/90

1^st number: 48/90, 2^nd number: 1 9/63

48/90 - 72/63 is -64/105.

Find the least common denominator or LCM of the two denominators:
LCM of 90 and 63 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 90 × 7 = 630,
48/90 = 48 × 7/90 × 7 = 336/630
Likewise, for the 2nd fraction, since 63 × 10 = 630,
72/63 = 72 × 10/63 × 10 = 720/630
Subtract the two like fractions:
336/630 - 720/630 = 336 - 720/630 = -384/630
After reducing the fraction, the answer is -64/105

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