Subtract 1/42 from 90/10, Solve 9 0/10

Subtract 1/42 from 90/10

1^st number: 9 0/10, 2^nd number: 1/42

90/10 - 1/42 is 377/42.

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,
90/10 = 90 × 21/10 × 21 = 1890/210
Likewise, for the 2nd fraction, since 42 × 5 = 210,
1/42 = 1 × 5/42 × 5 = 5/210
Subtract the two like fractions:
1890/210 - 5/210 = 1890 - 5/210 = 1885/210
After reducing the fraction, the answer is 377/42
In mixed form: 841/42

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