Subtract 9/42 from 36/40, Solve 36/40

Subtract 9/42 from 36/40

36/40 - 9/42 is 24/35.

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

Next, find the equivalent fraction of both fractional numbers with denominator 840
For the 1st fraction, since 40 × 21 = 840,
36/40 = 36 × 21/40 × 21 = 756/840
Likewise, for the 2nd fraction, since 42 × 20 = 840,
9/42 = 9 × 20/42 × 20 = 180/840
Subtract the two like fractions:
756/840 - 180/840 = 756 - 180/840 = 576/840
After reducing the fraction, the answer is 24/35

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