Subtract 90/21 from 70/5
1st number: 14 0/5, 2nd number: 4 6/21
70/5 - 90/21 is 68/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 21 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 5 × 21 = 105,
70/5 = 70 × 21/5 × 21 = 1470/105 - Likewise, for the 2nd fraction, since 21 × 5 = 105,
90/21 = 90 × 5/21 × 5 = 450/105 - Subtract the two like fractions:
1470/105 - 450/105 = 1470 - 450/105 = 1020/105 - After reducing the fraction, the answer is 68/7
- In mixed form: 95/7
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