Subtract 7/80 from 63/45, Solve 1 18/45

Subtract 7/80 from 63/45

1^st number: 1 18/45, 2^nd number: 7/80

63/45 - 7/80 is 21/16.

Find the least common denominator or LCM of the two denominators:
LCM of 45 and 80 is 720

Next, find the equivalent fraction of both fractional numbers with denominator 720
For the 1st fraction, since 45 × 16 = 720,
63/45 = 63 × 16/45 × 16 = 1008/720
Likewise, for the 2nd fraction, since 80 × 9 = 720,
7/80 = 7 × 9/80 × 9 = 63/720
Subtract the two like fractions:
1008/720 - 63/720 = 1008 - 63/720 = 945/720
After reducing the fraction, the answer is 21/16
In mixed form: 15/16

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