Subtract 9/42 from 72/10
1st number: 7 2/10, 2nd number: 9/42
72/10 - 9/42 is 489/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 10 × 21 = 210,
72/10 = 72 × 21/10 × 21 = 1512/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
9/42 = 9 × 5/42 × 5 = 45/210 - Subtract the two like fractions:
1512/210 - 45/210 = 1512 - 45/210 = 1467/210 - After reducing the fraction, the answer is 489/70
- In mixed form: 669/70
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