Add 90/27 and 5/42, Solve 3 9/27 + 5/42 as a fraction

Add 90/27 and 5/42

1^st number: 3 9/27, 2^nd number: 5/42

90/27 + 5/42 is 145/42.

Find the least common denominator or LCM of the two denominators:
LCM of 27 and 42 is 378

Next, find the equivalent fraction of both fractional numbers with denominator 378
For the 1st fraction, since 27 × 14 = 378,
90/27 = 90 × 14/27 × 14 = 1260/378
Likewise, for the 2nd fraction, since 42 × 9 = 378,
5/42 = 5 × 9/42 × 9 = 45/378
Add the two like fractions:
1260/378 + 45/378 = 1260 + 45/378 = 1305/378
1305/378 simplified gives 145/42
So, 90/27 + 5/42 = 145/42
In mixed form: 319/42

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