Subtract 10/72 from 7/70
7/70 - 10/72 is -7/180.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 72 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 70 × 36 = 2520,
7/70 = 7 × 36/70 × 36 = 252/2520 - Likewise, for the 2nd fraction, since 72 × 35 = 2520,
10/72 = 10 × 35/72 × 35 = 350/2520 - Subtract the two like fractions:
252/2520 - 350/2520 = 252 - 350/2520 = -98/2520 - After reducing the fraction, the answer is -7/180
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