Subtract 42/80 from 28/24, Solve 1 4/24

Subtract 42/80 from 28/24

1^st number: 1 4/24, 2^nd number: 42/80

28/24 - 42/80 is 77/120.

Find the least common denominator or LCM of the two denominators:
LCM of 24 and 80 is 240

Next, find the equivalent fraction of both fractional numbers with denominator 240
For the 1st fraction, since 24 × 10 = 240,
28/24 = 28 × 10/24 × 10 = 280/240
Likewise, for the 2nd fraction, since 80 × 3 = 240,
42/80 = 42 × 3/80 × 3 = 126/240
Subtract the two like fractions:
280/240 - 126/240 = 280 - 126/240 = 154/240
After reducing the fraction, the answer is 77/120

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