Subtract 42/7 from 70/15
1st number: 4 10/15, 2nd number: 6 0/7
70/15 - 42/7 is -4/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 7 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 15 × 7 = 105,
70/15 = 70 × 7/15 × 7 = 490/105 - Likewise, for the 2nd fraction, since 7 × 15 = 105,
42/7 = 42 × 15/7 × 15 = 630/105 - Subtract the two like fractions:
490/105 - 630/105 = 490 - 630/105 = -140/105 - After reducing the fraction, the answer is -4/3
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