Subtract 90/18 from 80/30
1st number: 2 20/30, 2nd number: 5 0/18
80/30 - 90/18 is -7/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 30 × 3 = 90,
80/30 = 80 × 3/30 × 3 = 240/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
90/18 = 90 × 5/18 × 5 = 450/90 - Subtract the two like fractions:
240/90 - 450/90 = 240 - 450/90 = -210/90 - After reducing the fraction, the answer is -7/3
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