Subtract 90/9 from 70/4
1st number: 17 2/4, 2nd number: 10 0/9
70/4 - 90/9 is 15/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 9 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 4 × 9 = 36,
70/4 = 70 × 9/4 × 9 = 630/36 - Likewise, for the 2nd fraction, since 9 × 4 = 36,
90/9 = 90 × 4/9 × 4 = 360/36 - Subtract the two like fractions:
630/36 - 360/36 = 630 - 360/36 = 270/36 - After reducing the fraction, the answer is 15/2
- In mixed form: 71/2
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