Subtract 54/70 from 90/12, Solve 7 6/12

Subtract 54/70 from 90/12

1^st number: 7 6/12, 2^nd number: 54/70

90/12 - 54/70 is 471/70.

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,
90/12 = 90 × 35/12 × 35 = 3150/420
Likewise, for the 2nd fraction, since 70 × 6 = 420,
54/70 = 54 × 6/70 × 6 = 324/420
Subtract the two like fractions:
3150/420 - 324/420 = 3150 - 324/420 = 2826/420
After reducing the fraction, the answer is 471/70
In mixed form: 651/70

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