Subtract 54/9 from 63/35, Solve 1 28/35

Subtract 54/9 from 63/35

1^st number: 1 28/35, 2^nd number: 6 0/9

63/35 - 54/9 is -21/5.

Find the least common denominator or LCM of the two denominators:
LCM of 35 and 9 is 315

Next, find the equivalent fraction of both fractional numbers with denominator 315
For the 1st fraction, since 35 × 9 = 315,
63/35 = 63 × 9/35 × 9 = 567/315
Likewise, for the 2nd fraction, since 9 × 35 = 315,
54/9 = 54 × 35/9 × 35 = 1890/315
Subtract the two like fractions:
567/315 - 1890/315 = 567 - 1890/315 = -1323/315
After reducing the fraction, the answer is -21/5

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