Subtract 12/42 from 70/54
1st number: 1 16/54, 2nd number: 12/42
70/54 - 12/42 is 191/189.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 42 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 54 × 7 = 378,
70/54 = 70 × 7/54 × 7 = 490/378 - Likewise, for the 2nd fraction, since 42 × 9 = 378,
12/42 = 12 × 9/42 × 9 = 108/378 - Subtract the two like fractions:
490/378 - 108/378 = 490 - 108/378 = 382/378 - After reducing the fraction, the answer is 191/189
- In mixed form: 12/189
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