Subtract 10/90 from 84/42, Solve 2 0/42

Subtract 10/90 from 84/42

1^st number: 2 0/42, 2^nd number: 10/90

84/42 - 10/90 is 17/9.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 90 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 42 × 15 = 630,
84/42 = 84 × 15/42 × 15 = 1260/630
Likewise, for the 2nd fraction, since 90 × 7 = 630,
10/90 = 10 × 7/90 × 7 = 70/630
Subtract the two like fractions:
1260/630 - 70/630 = 1260 - 70/630 = 1190/630
After reducing the fraction, the answer is 17/9
In mixed form: 18/9

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