Subtract 20/90 from 15/8
1st number: 1 7/8, 2nd number: 20/90
15/8 - 20/90 is 119/72.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 90 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 8 × 45 = 360,
15/8 = 15 × 45/8 × 45 = 675/360 - Likewise, for the 2nd fraction, since 90 × 4 = 360,
20/90 = 20 × 4/90 × 4 = 80/360 - Subtract the two like fractions:
675/360 - 80/360 = 675 - 80/360 = 595/360 - After reducing the fraction, the answer is 119/72
- In mixed form: 147/72
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