Add 20/63 and 80/42, Solve 20/63 + 1 38/42 as a fraction

Add 20/63 and 80/42

1^st number: 20/63, 2^nd number: 1 38/42

20/63 + 80/42 is 20/9.

Find the least common denominator or LCM of the two denominators:
LCM of 63 and 42 is 126

Next, find the equivalent fraction of both fractional numbers with denominator 126
For the 1st fraction, since 63 × 2 = 126,
20/63 = 20 × 2/63 × 2 = 40/126
Likewise, for the 2nd fraction, since 42 × 3 = 126,
80/42 = 80 × 3/42 × 3 = 240/126
Add the two like fractions:
40/126 + 240/126 = 40 + 240/126 = 280/126
280/126 simplified gives 20/9
So, 20/63 + 80/42 = 20/9
In mixed form: 22/9

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