Subtract 30/84 from 7/10, Solve 7/10

Subtract 30/84 from 7/10

7/10 - 30/84 is 12/35.

Find the least common denominator or LCM of the two denominators:
LCM of 10 and 84 is 420

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 10 × 42 = 420,
7/10 = 7 × 42/10 × 42 = 294/420
Likewise, for the 2nd fraction, since 84 × 5 = 420,
30/84 = 30 × 5/84 × 5 = 150/420
Subtract the two like fractions:
294/420 - 150/420 = 294 - 150/420 = 144/420
After reducing the fraction, the answer is 12/35

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