Subtract 72/63 from 9/5, Solve 1 4/5

Subtract 72/63 from 9/5

1^st number: 1 4/5, 2^nd number: 1 9/63

9/5 - 72/63 is 23/35.

Find the least common denominator or LCM of the two denominators:
LCM of 5 and 63 is 315

Next, find the equivalent fraction of both fractional numbers with denominator 315
For the 1st fraction, since 5 × 63 = 315,
9/5 = 9 × 63/5 × 63 = 567/315
Likewise, for the 2nd fraction, since 63 × 5 = 315,
72/63 = 72 × 5/63 × 5 = 360/315
Subtract the two like fractions:
567/315 - 360/315 = 567 - 360/315 = 207/315
After reducing the fraction, the answer is 23/35

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