Subtract 21/90 from 70/50
1st number: 1 20/50, 2nd number: 21/90
70/50 - 21/90 is 7/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 90 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 50 × 9 = 450,
70/50 = 70 × 9/50 × 9 = 630/450 - Likewise, for the 2nd fraction, since 90 × 5 = 450,
21/90 = 21 × 5/90 × 5 = 105/450 - Subtract the two like fractions:
630/450 - 105/450 = 630 - 105/450 = 525/450 - After reducing the fraction, the answer is 7/6
- In mixed form: 11/6
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