Subtract 18/10 from 42/7
1st number: 6 0/7, 2nd number: 1 8/10
42/7 - 18/10 is 21/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 10 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 7 × 10 = 70,
42/7 = 42 × 10/7 × 10 = 420/70 - Likewise, for the 2nd fraction, since 10 × 7 = 70,
18/10 = 18 × 7/10 × 7 = 126/70 - Subtract the two like fractions:
420/70 - 126/70 = 420 - 126/70 = 294/70 - After reducing the fraction, the answer is 21/5
- In mixed form: 41/5
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