Subtract 80/45 from 35/21, Solve 1 14/21

Subtract 80/45 from 35/21

1^st number: 1 14/21, 2^nd number: 1 35/45

35/21 - 80/45 is -1/9.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 45 is 315

Next, find the equivalent fraction of both fractional numbers with denominator 315
For the 1st fraction, since 21 × 15 = 315,
35/21 = 35 × 15/21 × 15 = 525/315
Likewise, for the 2nd fraction, since 45 × 7 = 315,
80/45 = 80 × 7/45 × 7 = 560/315
Subtract the two like fractions:
525/315 - 560/315 = 525 - 560/315 = -35/315
After reducing the fraction, the answer is -1/9

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