Add 45/42 and 30/18, Solve 1 3/42 + 1 12/18 as a fraction

Add 45/42 and 30/18

1^st number: 1 3/42, 2^nd number: 1 12/18

45/42 + 30/18 is 115/42.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 18 is 126

Next, find the equivalent fraction of both fractional numbers with denominator 126
For the 1st fraction, since 42 × 3 = 126,
45/42 = 45 × 3/42 × 3 = 135/126
Likewise, for the 2nd fraction, since 18 × 7 = 126,
30/18 = 30 × 7/18 × 7 = 210/126
Add the two like fractions:
135/126 + 210/126 = 135 + 210/126 = 345/126
345/126 simplified gives 115/42
So, 45/42 + 30/18 = 115/42
In mixed form: 231/42

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