Subtract 90/7 from 84/3, Solve 28 0/3

Subtract 90/7 from 84/3

1^st number: 28 0/3, 2^nd number: 12 6/7

84/3 - 90/7 is 106/7.

Find the least common denominator or LCM of the two denominators:
LCM of 3 and 7 is 21

Next, find the equivalent fraction of both fractional numbers with denominator 21
For the 1st fraction, since 3 × 7 = 21,
84/3 = 84 × 7/3 × 7 = 588/21
Likewise, for the 2nd fraction, since 7 × 3 = 21,
90/7 = 90 × 3/7 × 3 = 270/21
Subtract the two like fractions:
588/21 - 270/21 = 588 - 270/21 = 318/21
After reducing the fraction, the answer is 106/7
In mixed form: 151/7

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