Add 9/42 and 84/10, Solve 9/42 + 8 4/10 as a fraction

Add 9/42 and 84/10

1^st number: 9/42, 2^nd number: 8 4/10

9/42 + 84/10 is 603/70.

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,
9/42 = 9 × 5/42 × 5 = 45/210
Likewise, for the 2nd fraction, since 10 × 21 = 210,
84/10 = 84 × 21/10 × 21 = 1764/210
Add the two like fractions:
45/210 + 1764/210 = 45 + 1764/210 = 1809/210
1809/210 simplified gives 603/70
So, 9/42 + 84/10 = 603/70
In mixed form: 843/70

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