Add 84/80 and 4/42, Solve 1 4/80 + 4/42 as a fraction

Add 84/80 and 4/42

1^st number: 1 4/80, 2^nd number: 4/42

84/80 + 4/42 is 481/420.

Find the least common denominator or LCM of the two denominators:
LCM of 80 and 42 is 1680

Next, find the equivalent fraction of both fractional numbers with denominator 1680
For the 1st fraction, since 80 × 21 = 1680,
84/80 = 84 × 21/80 × 21 = 1764/1680
Likewise, for the 2nd fraction, since 42 × 40 = 1680,
4/42 = 4 × 40/42 × 40 = 160/1680
Add the two like fractions:
1764/1680 + 160/1680 = 1764 + 160/1680 = 1924/1680
1924/1680 simplified gives 481/420
So, 84/80 + 4/42 = 481/420
In mixed form: 161/420

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