Add 10/90 and 21/12, Solve 10/90 + 1 9/12 as a fraction

Add 10/90 and 21/12

1^st number: 10/90, 2^nd number: 1 9/12

10/90 + 21/12 is 67/36.

Find the least common denominator or LCM of the two denominators:
LCM of 90 and 12 is 180

Next, find the equivalent fraction of both fractional numbers with denominator 180
For the 1st fraction, since 90 × 2 = 180,
10/90 = 10 × 2/90 × 2 = 20/180
Likewise, for the 2nd fraction, since 12 × 15 = 180,
21/12 = 21 × 15/12 × 15 = 315/180
Add the two like fractions:
20/180 + 315/180 = 20 + 315/180 = 335/180
335/180 simplified gives 67/36
So, 10/90 + 21/12 = 67/36
In mixed form: 131/36

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