Subtract 6/9 from 40/7, Solve 5 5/7

Subtract 6/9 from 40/7

1^st number: 5 5/7, 2^nd number: 6/9

40/7 - 6/9 is 106/21.

Find the least common denominator or LCM of the two denominators:
LCM of 7 and 9 is 63

Next, find the equivalent fraction of both fractional numbers with denominator 63
For the 1st fraction, since 7 × 9 = 63,
40/7 = 40 × 9/7 × 9 = 360/63
Likewise, for the 2nd fraction, since 9 × 7 = 63,
6/9 = 6 × 7/9 × 7 = 42/63
Subtract the two like fractions:
360/63 - 42/63 = 360 - 42/63 = 318/63
After reducing the fraction, the answer is 106/21
In mixed form: 51/21

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