Add 20/18 and 42/72, Solve 1 2/18 + 42/72 as a fraction

Add 20/18 and 42/72

1^st number: 1 2/18, 2^nd number: 42/72

20/18 + 42/72 is 61/36.

Find the least common denominator or LCM of the two denominators:
LCM of 18 and 72 is 72

Next, find the equivalent fraction of both fractional numbers with denominator 72
For the 1st fraction, since 18 × 4 = 72,
20/18 = 20 × 4/18 × 4 = 80/72
Likewise, for the 2nd fraction, since 72 × 1 = 72,
42/72 = 42 × 1/72 × 1 = 42/72
Add the two like fractions:
80/72 + 42/72 = 80 + 42/72 = 122/72
122/72 simplified gives 61/36
So, 20/18 + 42/72 = 61/36
In mixed form: 125/36

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