Add 9/2 and 54/42, Solve 4 1/2 + 1 12/42 as a fraction

Add 9/2 and 54/42

1^st number: 4 1/2, 2^nd number: 1 12/42

9/2 + 54/42 is 81/14.

Find the least common denominator or LCM of the two denominators:
LCM of 2 and 42 is 42

Next, find the equivalent fraction of both fractional numbers with denominator 42
For the 1st fraction, since 2 × 21 = 42,
9/2 = 9 × 21/2 × 21 = 189/42
Likewise, for the 2nd fraction, since 42 × 1 = 42,
54/42 = 54 × 1/42 × 1 = 54/42
Add the two like fractions:
189/42 + 54/42 = 189 + 54/42 = 243/42
243/42 simplified gives 81/14
So, 9/2 + 54/42 = 81/14
In mixed form: 511/14

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