Subtract 40/35 from 40/72, Solve 40/72

Subtract 40/35 from 40/72

1^st number: 40/72, 2^nd number: 1 5/35

40/72 - 40/35 is -37/63.

Find the least common denominator or LCM of the two denominators:
LCM of 72 and 35 is 2520

Next, find the equivalent fraction of both fractional numbers with denominator 2520
For the 1st fraction, since 72 × 35 = 2520,
40/72 = 40 × 35/72 × 35 = 1400/2520
Likewise, for the 2nd fraction, since 35 × 72 = 2520,
40/35 = 40 × 72/35 × 72 = 2880/2520
Subtract the two like fractions:
1400/2520 - 2880/2520 = 1400 - 2880/2520 = -1480/2520
After reducing the fraction, the answer is -37/63

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