Subtract 63/70 from 90/42
1st number: 2 6/42, 2nd number: 63/70
90/42 - 63/70 is 87/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
90/42 = 90 × 5/42 × 5 = 450/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
63/70 = 63 × 3/70 × 3 = 189/210 - Subtract the two like fractions:
450/210 - 189/210 = 450 - 189/210 = 261/210 - After reducing the fraction, the answer is 87/70
- In mixed form: 117/70
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