Subtract 5/21 from 50/40, Solve 1 10/40

Subtract 5/21 from 50/40

1^st number: 1 10/40, 2^nd number: 5/21

50/40 - 5/21 is 85/84.

Find the least common denominator or LCM of the two denominators:
LCM of 40 and 21 is 840

Next, find the equivalent fraction of both fractional numbers with denominator 840
For the 1st fraction, since 40 × 21 = 840,
50/40 = 50 × 21/40 × 21 = 1050/840
Likewise, for the 2nd fraction, since 21 × 40 = 840,
5/21 = 5 × 40/21 × 40 = 200/840
Subtract the two like fractions:
1050/840 - 200/840 = 1050 - 200/840 = 850/840
After reducing the fraction, the answer is 85/84
In mixed form: 11/84

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