Add 84/10 and 45/42, Solve 8 4/10 + 1 3/42 as a fraction

Add 84/10 and 45/42

1^st number: 8 4/10, 2^nd number: 1 3/42

84/10 + 45/42 is 663/70.

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

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 10 × 21 = 210,
84/10 = 84 × 21/10 × 21 = 1764/210
Likewise, for the 2nd fraction, since 42 × 5 = 210,
45/42 = 45 × 5/42 × 5 = 225/210
Add the two like fractions:
1764/210 + 225/210 = 1764 + 225/210 = 1989/210
1989/210 simplified gives 663/70
So, 84/10 + 45/42 = 663/70
In mixed form: 933/70

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