Subtract 36/42 from 7/8, Solve 7/8

Subtract 36/42 from 7/8

7/8 - 36/42 is 1/56.

Find the least common denominator or LCM of the two denominators:
LCM of 8 and 42 is 168

Next, find the equivalent fraction of both fractional numbers with denominator 168
For the 1st fraction, since 8 × 21 = 168,
7/8 = 7 × 21/8 × 21 = 147/168
Likewise, for the 2nd fraction, since 42 × 4 = 168,
36/42 = 36 × 4/42 × 4 = 144/168
Subtract the two like fractions:
147/168 - 144/168 = 147 - 144/168 = 3/168
After reducing the fraction, the answer is 1/56

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