Subtract 90/45 from 72/7
1st number: 10 2/7, 2nd number: 2 0/45
72/7 - 90/45 is 58/7.
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,
72/7 = 72 × 45/7 × 45 = 3240/315 - Likewise, for the 2nd fraction, since 45 × 7 = 315,
90/45 = 90 × 7/45 × 7 = 630/315 - Subtract the two like fractions:
3240/315 - 630/315 = 3240 - 630/315 = 2610/315 - After reducing the fraction, the answer is 58/7
- In mixed form: 82/7
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