Add 42/36 and 21/84, Solve 1 6/36 + 21/84 as a fraction

Add 42/36 and 21/84

1^st number: 1 6/36, 2^nd number: 21/84

42/36 + 21/84 is 17/12.

Find the least common denominator or LCM of the two denominators:
LCM of 36 and 84 is 252

Next, find the equivalent fraction of both fractional numbers with denominator 252
For the 1st fraction, since 36 × 7 = 252,
42/36 = 42 × 7/36 × 7 = 294/252
Likewise, for the 2nd fraction, since 84 × 3 = 252,
21/84 = 21 × 3/84 × 3 = 63/252
Add the two like fractions:
294/252 + 63/252 = 294 + 63/252 = 357/252
357/252 simplified gives 17/12
So, 42/36 + 21/84 = 17/12
In mixed form: 15/12

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