Subtract 70/9 from 42/45
1st number: 42/45, 2nd number: 7 7/9
42/45 - 70/9 is -308/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 9 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 45 × 1 = 45,
42/45 = 42 × 1/45 × 1 = 42/45 - Likewise, for the 2nd fraction, since 9 × 5 = 45,
70/9 = 70 × 5/9 × 5 = 350/45 - Subtract the two like fractions:
42/45 - 350/45 = 42 - 350/45 = -308/45
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