Subtract 30/84 from 60/70, Solve 60/70

Subtract 30/84 from 60/70

60/70 - 30/84 is 1/2.

Find the least common denominator or LCM of the two denominators:
LCM of 70 and 84 is 420

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 70 × 6 = 420,
60/70 = 60 × 6/70 × 6 = 360/420
Likewise, for the 2nd fraction, since 84 × 5 = 420,
30/84 = 30 × 5/84 × 5 = 150/420
Subtract the two like fractions:
360/420 - 150/420 = 360 - 150/420 = 210/420
After reducing the fraction, the answer is 1/2

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