Subtract 48/42 from 90/12, Solve 7 6/12

Subtract 48/42 from 90/12

1^st number: 7 6/12, 2^nd number: 1 6/42

90/12 - 48/42 is 89/14.

Find the least common denominator or LCM of the two denominators:
LCM of 12 and 42 is 84

Next, find the equivalent fraction of both fractional numbers with denominator 84
For the 1st fraction, since 12 × 7 = 84,
90/12 = 90 × 7/12 × 7 = 630/84
Likewise, for the 2nd fraction, since 42 × 2 = 84,
48/42 = 48 × 2/42 × 2 = 96/84
Subtract the two like fractions:
630/84 - 96/84 = 630 - 96/84 = 534/84
After reducing the fraction, the answer is 89/14
In mixed form: 65/14

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