Subtract 49/48 from 40/70, Solve 40/70

Subtract 49/48 from 40/70

1^st number: 40/70, 2^nd number: 1 1/48

40/70 - 49/48 is -151/336.

Find the least common denominator or LCM of the two denominators:
LCM of 70 and 48 is 1680

Next, find the equivalent fraction of both fractional numbers with denominator 1680
For the 1st fraction, since 70 × 24 = 1680,
40/70 = 40 × 24/70 × 24 = 960/1680
Likewise, for the 2nd fraction, since 48 × 35 = 1680,
49/48 = 49 × 35/48 × 35 = 1715/1680
Subtract the two like fractions:
960/1680 - 1715/1680 = 960 - 1715/1680 = -755/1680
After reducing the fraction, the answer is -151/336

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