Add 20/84 and 35/10, Solve 20/84 + 3 5/10 as a fraction

Add 20/84 and 35/10

1^st number: 20/84, 2^nd number: 3 5/10

20/84 + 35/10 is 157/42.

Find the least common denominator or LCM of the two denominators:
LCM of 84 and 10 is 420

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 84 × 5 = 420,
20/84 = 20 × 5/84 × 5 = 100/420
Likewise, for the 2nd fraction, since 10 × 42 = 420,
35/10 = 35 × 42/10 × 42 = 1470/420
Add the two like fractions:
100/420 + 1470/420 = 100 + 1470/420 = 1570/420
1570/420 simplified gives 157/42
So, 20/84 + 35/10 = 157/42
In mixed form: 331/42

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