Subtract 40/16 from 70/90
1st number: 70/90, 2nd number: 2 8/16
70/90 - 40/16 is -31/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 16 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 90 × 8 = 720,
70/90 = 70 × 8/90 × 8 = 560/720 - Likewise, for the 2nd fraction, since 16 × 45 = 720,
40/16 = 40 × 45/16 × 45 = 1800/720 - Subtract the two like fractions:
560/720 - 1800/720 = 560 - 1800/720 = -1240/720 - After reducing the fraction, the answer is -31/18
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