Subtract 27/70 from 30/60, Solve 30/60

Subtract 27/70 from 30/60

30/60 - 27/70 is 4/35.

Find the least common denominator or LCM of the two denominators:
LCM of 60 and 70 is 420

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 60 × 7 = 420,
30/60 = 30 × 7/60 × 7 = 210/420
Likewise, for the 2nd fraction, since 70 × 6 = 420,
27/70 = 27 × 6/70 × 6 = 162/420
Subtract the two like fractions:
210/420 - 162/420 = 210 - 162/420 = 48/420
After reducing the fraction, the answer is 4/35

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