Subtract 9/35 from 90/80, Solve 1 10/80

Subtract 9/35 from 90/80

1^st number: 1 10/80, 2^nd number: 9/35

90/80 - 9/35 is 243/280.

Find the least common denominator or LCM of the two denominators:
LCM of 80 and 35 is 560

Next, find the equivalent fraction of both fractional numbers with denominator 560
For the 1st fraction, since 80 × 7 = 560,
90/80 = 90 × 7/80 × 7 = 630/560
Likewise, for the 2nd fraction, since 35 × 16 = 560,
9/35 = 9 × 16/35 × 16 = 144/560
Subtract the two like fractions:
630/560 - 144/560 = 630 - 144/560 = 486/560
After reducing the fraction, the answer is 243/280

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