Subtract 70/18 from 80/45
1st number: 1 35/45, 2nd number: 3 16/18
80/45 - 70/18 is -19/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 45 × 2 = 90,
80/45 = 80 × 2/45 × 2 = 160/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
70/18 = 70 × 5/18 × 5 = 350/90 - Subtract the two like fractions:
160/90 - 350/90 = 160 - 350/90 = -190/90 - After reducing the fraction, the answer is -19/9
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