Subtract 40/45 from 84/7
1st number: 12 0/7, 2nd number: 40/45
84/7 - 40/45 is 100/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 45 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 7 × 45 = 315,
84/7 = 84 × 45/7 × 45 = 3780/315 - Likewise, for the 2nd fraction, since 45 × 7 = 315,
40/45 = 40 × 7/45 × 7 = 280/315 - Subtract the two like fractions:
3780/315 - 280/315 = 3780 - 280/315 = 3500/315 - After reducing the fraction, the answer is 100/9
- In mixed form: 111/9
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