Subtract 72/8 from 70/90
1st number: 70/90, 2nd number: 9 0/8
70/90 - 72/8 is -74/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 8 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 90 × 4 = 360,
70/90 = 70 × 4/90 × 4 = 280/360 - Likewise, for the 2nd fraction, since 8 × 45 = 360,
72/8 = 72 × 45/8 × 45 = 3240/360 - Subtract the two like fractions:
280/360 - 3240/360 = 280 - 3240/360 = -2960/360 - After reducing the fraction, the answer is -74/9
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