Subtract 36/72 from 42/70, Solve 42/70

Subtract 36/72 from 42/70

42/70 - 36/72 is 1/10.

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,
42/70 = 42 × 36/70 × 36 = 1512/2520
Likewise, for the 2nd fraction, since 72 × 35 = 2520,
36/72 = 36 × 35/72 × 35 = 1260/2520
Subtract the two like fractions:
1512/2520 - 1260/2520 = 1512 - 1260/2520 = 252/2520
After reducing the fraction, the answer is 1/10

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