Subtract 20/4 from 7/70
1st number: 7/70, 2nd number: 5 0/4
7/70 - 20/4 is -49/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 4 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 70 × 2 = 140,
7/70 = 7 × 2/70 × 2 = 14/140 - Likewise, for the 2nd fraction, since 4 × 35 = 140,
20/4 = 20 × 35/4 × 35 = 700/140 - Subtract the two like fractions:
14/140 - 700/140 = 14 - 700/140 = -686/140 - After reducing the fraction, the answer is -49/10
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