Subtract 21/90 from 63/8
1st number: 7 7/8, 2nd number: 21/90
63/8 - 21/90 is 917/120.
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,
63/8 = 63 × 45/8 × 45 = 2835/360 - Likewise, for the 2nd fraction, since 90 × 4 = 360,
21/90 = 21 × 4/90 × 4 = 84/360 - Subtract the two like fractions:
2835/360 - 84/360 = 2835 - 84/360 = 2751/360 - After reducing the fraction, the answer is 917/120
- In mixed form: 777/120
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