Add 9/36 and 40/21, Solve 9/36 + 1 19/21 as a fraction

Add 9/36 and 40/21

1^st number: 9/36, 2^nd number: 1 19/21

9/36 + 40/21 is 181/84.

Find the least common denominator or LCM of the two denominators:
LCM of 36 and 21 is 252

Next, find the equivalent fraction of both fractional numbers with denominator 252
For the 1st fraction, since 36 × 7 = 252,
9/36 = 9 × 7/36 × 7 = 63/252
Likewise, for the 2nd fraction, since 21 × 12 = 252,
40/21 = 40 × 12/21 × 12 = 480/252
Add the two like fractions:
63/252 + 480/252 = 63 + 480/252 = 543/252
543/252 simplified gives 181/84
So, 9/36 + 40/21 = 181/84
In mixed form: 213/84

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