Subtract 9/4 from 7/70, Solve 7/70

Subtract 9/4 from 7/70

1^st number: 7/70, 2^nd number: 2 1/4

7/70 - 9/4 is -43/20.

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,
9/4 = 9 × 35/4 × 35 = 315/140
Subtract the two like fractions:
14/140 - 315/140 = 14 - 315/140 = -301/140
After reducing the fraction, the answer is -43/20

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