Add 90/12 and 7/84, Solve 7 6/12 + 7/84 as a fraction

Add 90/12 and 7/84

1^st number: 7 6/12, 2^nd number: 7/84

90/12 + 7/84 is 91/12.

Find the least common denominator or LCM of the two denominators:
LCM of 12 and 84 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 84 × 1 = 84,
7/84 = 7 × 1/84 × 1 = 7/84
Add the two like fractions:
630/84 + 7/84 = 630 + 7/84 = 637/84
637/84 simplified gives 91/12
So, 90/12 + 7/84 = 91/12
In mixed form: 77/12

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