Subtract 10/40 from 36/42, Solve 36/42

Subtract 10/40 from 36/42

36/42 - 10/40 is 17/28.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 40 is 840

Next, find the equivalent fraction of both fractional numbers with denominator 840
For the 1st fraction, since 42 × 20 = 840,
36/42 = 36 × 20/42 × 20 = 720/840
Likewise, for the 2nd fraction, since 40 × 21 = 840,
10/40 = 10 × 21/40 × 21 = 210/840
Subtract the two like fractions:
720/840 - 210/840 = 720 - 210/840 = 510/840
After reducing the fraction, the answer is 17/28

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