Add 90/12 and 9/7, Solve 7 6/12 + 1 2/7 as a fraction

Add 90/12 and 9/7

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

90/12 + 9/7 is 123/14.

Find the least common denominator or LCM of the two denominators:
LCM of 12 and 7 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 7 × 12 = 84,
9/7 = 9 × 12/7 × 12 = 108/84
Add the two like fractions:
630/84 + 108/84 = 630 + 108/84 = 738/84
738/84 simplified gives 123/14
So, 90/12 + 9/7 = 123/14
In mixed form: 811/14

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