Subtract 70/90 from 70/40
1st number: 1 30/40, 2nd number: 70/90
70/40 - 70/90 is 35/36.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 90 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 40 × 9 = 360,
70/40 = 70 × 9/40 × 9 = 630/360 - Likewise, for the 2nd fraction, since 90 × 4 = 360,
70/90 = 70 × 4/90 × 4 = 280/360 - Subtract the two like fractions:
630/360 - 280/360 = 630 - 280/360 = 350/360 - After reducing the fraction, the answer is 35/36
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