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

Add 9/12 and 90/7

1^st number: 9/12, 2^nd number: 12 6/7

9/12 + 90/7 is 381/28.

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,
9/12 = 9 × 7/12 × 7 = 63/84
Likewise, for the 2nd fraction, since 7 × 12 = 84,
90/7 = 90 × 12/7 × 12 = 1080/84
Add the two like fractions:
63/84 + 1080/84 = 63 + 1080/84 = 1143/84
1143/84 simplified gives 381/28
So, 9/12 + 90/7 = 381/28
In mixed form: 1317/28

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