Add 84/42 and 15/10, Solve 2 0/42 + 1 5/10 as a fraction

Add 84/42 and 15/10

1^st number: 2 0/42, 2^nd number: 1 5/10

84/42 + 15/10 is 7/2.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 10 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 42 × 5 = 210,
84/42 = 84 × 5/42 × 5 = 420/210
Likewise, for the 2nd fraction, since 10 × 21 = 210,
15/10 = 15 × 21/10 × 21 = 315/210
Add the two like fractions:
420/210 + 315/210 = 420 + 315/210 = 735/210
735/210 simplified gives 7/2
So, 84/42 + 15/10 = 7/2
In mixed form: 31/2

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