Subtract 7/70 from 84/12, Solve 7 0/12

Subtract 7/70 from 84/12

1^st number: 7 0/12, 2^nd number: 7/70

84/12 - 7/70 is 69/10.

Find the least common denominator or LCM of the two denominators:
LCM of 12 and 70 is 420

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 12 × 35 = 420,
84/12 = 84 × 35/12 × 35 = 2940/420
Likewise, for the 2nd fraction, since 70 × 6 = 420,
7/70 = 7 × 6/70 × 6 = 42/420
Subtract the two like fractions:
2940/420 - 42/420 = 2940 - 42/420 = 2898/420
After reducing the fraction, the answer is 69/10
In mixed form: 69/10

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