Subtract 9/80 from 35/42, Solve 35/42

Subtract 9/80 from 35/42

35/42 - 9/80 is 173/240.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 80 is 1680

Next, find the equivalent fraction of both fractional numbers with denominator 1680
For the 1st fraction, since 42 × 40 = 1680,
35/42 = 35 × 40/42 × 40 = 1400/1680
Likewise, for the 2nd fraction, since 80 × 21 = 1680,
9/80 = 9 × 21/80 × 21 = 189/1680
Subtract the two like fractions:
1400/1680 - 189/1680 = 1400 - 189/1680 = 1211/1680
After reducing the fraction, the answer is 173/240

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