Subtract 40/8 from 80/30
1st number: 2 20/30, 2nd number: 5 0/8
80/30 - 40/8 is -7/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 8 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 30 × 4 = 120,
80/30 = 80 × 4/30 × 4 = 320/120 - Likewise, for the 2nd fraction, since 8 × 15 = 120,
40/8 = 40 × 15/8 × 15 = 600/120 - Subtract the two like fractions:
320/120 - 600/120 = 320 - 600/120 = -280/120 - After reducing the fraction, the answer is -7/3
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