Subtract 30/32 from 7/70
7/70 - 30/32 is -67/80.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 32 is 1120
Next, find the equivalent fraction of both fractional numbers with denominator 1120 - For the 1st fraction, since 70 × 16 = 1120,
7/70 = 7 × 16/70 × 16 = 112/1120 - Likewise, for the 2nd fraction, since 32 × 35 = 1120,
30/32 = 30 × 35/32 × 35 = 1050/1120 - Subtract the two like fractions:
112/1120 - 1050/1120 = 112 - 1050/1120 = -938/1120 - After reducing the fraction, the answer is -67/80
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