Add 36/10 and 21/90, Solve 3 6/10 + 21/90 as a fraction

Add 36/10 and 21/90

1^st number: 3 6/10, 2^nd number: 21/90

36/10 + 21/90 is 23/6.

Find the least common denominator or LCM of the two denominators:
LCM of 10 and 90 is 90

Next, find the equivalent fraction of both fractional numbers with denominator 90
For the 1st fraction, since 10 × 9 = 90,
36/10 = 36 × 9/10 × 9 = 324/90
Likewise, for the 2nd fraction, since 90 × 1 = 90,
21/90 = 21 × 1/90 × 1 = 21/90
Add the two like fractions:
324/90 + 21/90 = 324 + 21/90 = 345/90
345/90 simplified gives 23/6
So, 36/10 + 21/90 = 23/6
In mixed form: 35/6

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