Subtract 30/16 from 80/45, Solve 1 35/45

Subtract 30/16 from 80/45

1^st number: 1 35/45, 2^nd number: 1 14/16

80/45 - 30/16 is -7/72.

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

Next, find the equivalent fraction of both fractional numbers with denominator 720
For the 1st fraction, since 45 × 16 = 720,
80/45 = 80 × 16/45 × 16 = 1280/720
Likewise, for the 2nd fraction, since 16 × 45 = 720,
30/16 = 30 × 45/16 × 45 = 1350/720
Subtract the two like fractions:
1280/720 - 1350/720 = 1280 - 1350/720 = -70/720
After reducing the fraction, the answer is -7/72

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