Add 36/21 and 60/12, Solve 1 15/21 + 5 0/12 as a fraction

Add 36/21 and 60/12

1^st number: 1 15/21, 2^nd number: 5 0/12

36/21 + 60/12 is 47/7.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 12 is 84

Next, find the equivalent fraction of both fractional numbers with denominator 84
For the 1st fraction, since 21 × 4 = 84,
36/21 = 36 × 4/21 × 4 = 144/84
Likewise, for the 2nd fraction, since 12 × 7 = 84,
60/12 = 60 × 7/12 × 7 = 420/84
Add the two like fractions:
144/84 + 420/84 = 144 + 420/84 = 564/84
564/84 simplified gives 47/7
So, 36/21 + 60/12 = 47/7
In mixed form: 65/7

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