Add 40/42 and 84/10, Solve 40/42 + 8 4/10 as a fraction

Add 40/42 and 84/10

1^st number: 40/42, 2^nd number: 8 4/10

40/42 + 84/10 is 982/105.

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,
40/42 = 40 × 5/42 × 5 = 200/210
Likewise, for the 2nd fraction, since 10 × 21 = 210,
84/10 = 84 × 21/10 × 21 = 1764/210
Add the two like fractions:
200/210 + 1764/210 = 200 + 1764/210 = 1964/210
1964/210 simplified gives 982/105
So, 40/42 + 84/10 = 982/105
In mixed form: 937/105

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