Subtract 4/40 from 45/7, Solve 6 3/7

Subtract 4/40 from 45/7

1^st number: 6 3/7, 2^nd number: 4/40

45/7 - 4/40 is 443/70.

Find the least common denominator or LCM of the two denominators:
LCM of 7 and 40 is 280

Next, find the equivalent fraction of both fractional numbers with denominator 280
For the 1st fraction, since 7 × 40 = 280,
45/7 = 45 × 40/7 × 40 = 1800/280
Likewise, for the 2nd fraction, since 40 × 7 = 280,
4/40 = 4 × 7/40 × 7 = 28/280
Subtract the two like fractions:
1800/280 - 28/280 = 1800 - 28/280 = 1772/280
After reducing the fraction, the answer is 443/70
In mixed form: 623/70

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