Subtract 80/35 from 80/90, Solve 80/90

Subtract 80/35 from 80/90

1^st number: 80/90, 2^nd number: 2 10/35

80/90 - 80/35 is -88/63.

Find the least common denominator or LCM of the two denominators:
LCM of 90 and 35 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 90 × 7 = 630,
80/90 = 80 × 7/90 × 7 = 560/630
Likewise, for the 2nd fraction, since 35 × 18 = 630,
80/35 = 80 × 18/35 × 18 = 1440/630
Subtract the two like fractions:
560/630 - 1440/630 = 560 - 1440/630 = -880/630
After reducing the fraction, the answer is -88/63

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