Subtract 63/45 from 7/16, Solve 7/16

Subtract 63/45 from 7/16

1^st number: 7/16, 2^nd number: 1 18/45

7/16 - 63/45 is -77/80.

Find the least common denominator or LCM of the two denominators:
LCM of 16 and 45 is 720

Next, find the equivalent fraction of both fractional numbers with denominator 720
For the 1st fraction, since 16 × 45 = 720,
7/16 = 7 × 45/16 × 45 = 315/720
Likewise, for the 2nd fraction, since 45 × 16 = 720,
63/45 = 63 × 16/45 × 16 = 1008/720
Subtract the two like fractions:
315/720 - 1008/720 = 315 - 1008/720 = -693/720
After reducing the fraction, the answer is -77/80

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