Subtract 90/40 from 45/7, Solve 6 3/7

Subtract 90/40 from 45/7

1^st number: 6 3/7, 2^nd number: 2 10/40

45/7 - 90/40 is 117/28.

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,
90/40 = 90 × 7/40 × 7 = 630/280
Subtract the two like fractions:
1800/280 - 630/280 = 1800 - 630/280 = 1170/280
After reducing the fraction, the answer is 117/28
In mixed form: 45/28

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