Add 12/45 and 81/7, Solve 12/45 + 11 4/7 as a fraction

Add 12/45 and 81/7

1^st number: 12/45, 2^nd number: 11 4/7

12/45 + 81/7 is 1243/105.

Find the least common denominator or LCM of the two denominators:
LCM of 45 and 7 is 315

Next, find the equivalent fraction of both fractional numbers with denominator 315
For the 1st fraction, since 45 × 7 = 315,
12/45 = 12 × 7/45 × 7 = 84/315
Likewise, for the 2nd fraction, since 7 × 45 = 315,
81/7 = 81 × 45/7 × 45 = 3645/315
Add the two like fractions:
84/315 + 3645/315 = 84 + 3645/315 = 3729/315
3729/315 simplified gives 1243/105
So, 12/45 + 81/7 = 1243/105
In mixed form: 1188/105

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