Subtract 28/30 from 49/40, Solve 1 9/40

Subtract 28/30 from 49/40

1^st number: 1 9/40, 2^nd number: 28/30

49/40 - 28/30 is 7/24.

Find the least common denominator or LCM of the two denominators:
LCM of 40 and 30 is 120

Next, find the equivalent fraction of both fractional numbers with denominator 120
For the 1st fraction, since 40 × 3 = 120,
49/40 = 49 × 3/40 × 3 = 147/120
Likewise, for the 2nd fraction, since 30 × 4 = 120,
28/30 = 28 × 4/30 × 4 = 112/120
Subtract the two like fractions:
147/120 - 112/120 = 147 - 112/120 = 35/120
After reducing the fraction, the answer is 7/24

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