Subtract 3/90 from 84/7, Solve 12 0/7

Subtract 3/90 from 84/7

1^st number: 12 0/7, 2^nd number: 3/90

84/7 - 3/90 is 359/30.

Find the least common denominator or LCM of the two denominators:
LCM of 7 and 90 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 7 × 90 = 630,
84/7 = 84 × 90/7 × 90 = 7560/630
Likewise, for the 2nd fraction, since 90 × 7 = 630,
3/90 = 3 × 7/90 × 7 = 21/630
Subtract the two like fractions:
7560/630 - 21/630 = 7560 - 21/630 = 7539/630
After reducing the fraction, the answer is 359/30
In mixed form: 1129/30

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