Subtract 72/40 from 2/70, Solve 2/70

Subtract 72/40 from 2/70

1^st number: 2/70, 2^nd number: 1 32/40

2/70 - 72/40 is -62/35.

Find the least common denominator or LCM of the two denominators:
LCM of 70 and 40 is 280

Next, find the equivalent fraction of both fractional numbers with denominator 280
For the 1st fraction, since 70 × 4 = 280,
2/70 = 2 × 4/70 × 4 = 8/280
Likewise, for the 2nd fraction, since 40 × 7 = 280,
72/40 = 72 × 7/40 × 7 = 504/280
Subtract the two like fractions:
8/280 - 504/280 = 8 - 504/280 = -496/280
After reducing the fraction, the answer is -62/35

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