Add 20/80 and 50/42, Solve 20/80 + 1 8/42 as a fraction

Add 20/80 and 50/42

1^st number: 20/80, 2^nd number: 1 8/42

20/80 + 50/42 is 121/84.

Find the least common denominator or LCM of the two denominators:
LCM of 80 and 42 is 1680

Next, find the equivalent fraction of both fractional numbers with denominator 1680
For the 1st fraction, since 80 × 21 = 1680,
20/80 = 20 × 21/80 × 21 = 420/1680
Likewise, for the 2nd fraction, since 42 × 40 = 1680,
50/42 = 50 × 40/42 × 40 = 2000/1680
Add the two like fractions:
420/1680 + 2000/1680 = 420 + 2000/1680 = 2420/1680
2420/1680 simplified gives 121/84
So, 20/80 + 50/42 = 121/84
In mixed form: 137/84

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