Subtract 27/42 from 9/10, Solve 9/10

Subtract 27/42 from 9/10

9/10 - 27/42 is 9/35.

Find the least common denominator or LCM of the two denominators:
LCM of 10 and 42 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 10 × 21 = 210,
9/10 = 9 × 21/10 × 21 = 189/210
Likewise, for the 2nd fraction, since 42 × 5 = 210,
27/42 = 27 × 5/42 × 5 = 135/210
Subtract the two like fractions:
189/210 - 135/210 = 189 - 135/210 = 54/210
After reducing the fraction, the answer is 9/35

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