Subtract 2/90 from 90/7, Solve 12 6/7

Subtract 2/90 from 90/7

1^st number: 12 6/7, 2^nd number: 2/90

90/7 - 2/90 is 4043/315.

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,
90/7 = 90 × 90/7 × 90 = 8100/630
Likewise, for the 2nd fraction, since 90 × 7 = 630,
2/90 = 2 × 7/90 × 7 = 14/630
Subtract the two like fractions:
8100/630 - 14/630 = 8100 - 14/630 = 8086/630
After reducing the fraction, the answer is 4043/315
In mixed form: 12263/315

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