Add 10/42 and 15/9, Solve 10/42 + 1 6/9 as a fraction

Add 10/42 and 15/9

1^st number: 10/42, 2^nd number: 1 6/9

10/42 + 15/9 is 40/21.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 9 is 126

Next, find the equivalent fraction of both fractional numbers with denominator 126
For the 1st fraction, since 42 × 3 = 126,
10/42 = 10 × 3/42 × 3 = 30/126
Likewise, for the 2nd fraction, since 9 × 14 = 126,
15/9 = 15 × 14/9 × 14 = 210/126
Add the two like fractions:
30/126 + 210/126 = 30 + 210/126 = 240/126
240/126 simplified gives 40/21
So, 10/42 + 15/9 = 40/21
In mixed form: 119/21

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