Subtract 36/40 from 42/16, Solve 2 10/16

Subtract 36/40 from 42/16

1^st number: 2 10/16, 2^nd number: 36/40

42/16 - 36/40 is 69/40.

Find the least common denominator or LCM of the two denominators:
LCM of 16 and 40 is 80

Next, find the equivalent fraction of both fractional numbers with denominator 80
For the 1st fraction, since 16 × 5 = 80,
42/16 = 42 × 5/16 × 5 = 210/80
Likewise, for the 2nd fraction, since 40 × 2 = 80,
36/40 = 36 × 2/40 × 2 = 72/80
Subtract the two like fractions:
210/80 - 72/80 = 210 - 72/80 = 138/80
After reducing the fraction, the answer is 69/40
In mixed form: 129/40

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