Subtract 7/80 from 72/45, Solve 1 27/45

Subtract 7/80 from 72/45

1^st number: 1 27/45, 2^nd number: 7/80

72/45 - 7/80 is 121/80.

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,
72/45 = 72 × 16/45 × 16 = 1152/720
Likewise, for the 2nd fraction, since 80 × 9 = 720,
7/80 = 7 × 9/80 × 9 = 63/720
Subtract the two like fractions:
1152/720 - 63/720 = 1152 - 63/720 = 1089/720
After reducing the fraction, the answer is 121/80
In mixed form: 141/80

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