Add 20/42 and 72/10, Solve 20/42 + 7 2/10 as a fraction

Add 20/42 and 72/10

1^st number: 20/42, 2^nd number: 7 2/10

20/42 + 72/10 is 806/105.

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,
20/42 = 20 × 5/42 × 5 = 100/210
Likewise, for the 2nd fraction, since 10 × 21 = 210,
72/10 = 72 × 21/10 × 21 = 1512/210
Add the two like fractions:
100/210 + 1512/210 = 100 + 1512/210 = 1612/210
1612/210 simplified gives 806/105
So, 20/42 + 72/10 = 806/105
In mixed form: 771/105

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