Subtract 48/40 from 28/30
1st number: 28/30, 2nd number: 1 8/40
28/30 - 48/40 is -4/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 30 × 4 = 120,
28/30 = 28 × 4/30 × 4 = 112/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
48/40 = 48 × 3/40 × 3 = 144/120 - Subtract the two like fractions:
112/120 - 144/120 = 112 - 144/120 = -32/120 - After reducing the fraction, the answer is -4/15
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