Add 90/12 and 56/21, Solve 7 6/12 + 2 14/21 as a fraction

Add 90/12 and 56/21

1^st number: 7 6/12, 2^nd number: 2 14/21

90/12 + 56/21 is 61/6.

Find the least common denominator or LCM of the two denominators:
LCM of 12 and 21 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 21 × 4 = 84,
56/21 = 56 × 4/21 × 4 = 224/84
Add the two like fractions:
630/84 + 224/84 = 630 + 224/84 = 854/84
854/84 simplified gives 61/6
So, 90/12 + 56/21 = 61/6
In mixed form: 101/6

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