Subtract 4/21 from 35/80, Solve 35/80

Subtract 4/21 from 35/80

35/80 - 4/21 is 83/336.

Find the least common denominator or LCM of the two denominators:
LCM of 80 and 21 is 1680

Next, find the equivalent fraction of both fractional numbers with denominator 1680
For the 1st fraction, since 80 × 21 = 1680,
35/80 = 35 × 21/80 × 21 = 735/1680
Likewise, for the 2nd fraction, since 21 × 80 = 1680,
4/21 = 4 × 80/21 × 80 = 320/1680
Subtract the two like fractions:
735/1680 - 320/1680 = 735 - 320/1680 = 415/1680
After reducing the fraction, the answer is 83/336

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