Subtract 42/90 from 15/8
1st number: 1 7/8, 2nd number: 42/90
15/8 - 42/90 is 169/120.
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,
42/90 = 42 × 4/90 × 4 = 168/360 - Subtract the two like fractions:
675/360 - 168/360 = 675 - 168/360 = 507/360 - After reducing the fraction, the answer is 169/120
- In mixed form: 149/120
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