Subtract 8/12 from 90/40, Solve 2 10/40

Subtract 8/12 from 90/40

1^st number: 2 10/40, 2^nd number: 8/12

90/40 - 8/12 is 19/12.

Find the least common denominator or LCM of the two denominators:
LCM of 40 and 12 is 120

Next, find the equivalent fraction of both fractional numbers with denominator 120
For the 1st fraction, since 40 × 3 = 120,
90/40 = 90 × 3/40 × 3 = 270/120
Likewise, for the 2nd fraction, since 12 × 10 = 120,
8/12 = 8 × 10/12 × 10 = 80/120
Subtract the two like fractions:
270/120 - 80/120 = 270 - 80/120 = 190/120
After reducing the fraction, the answer is 19/12
In mixed form: 17/12

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