Add 84/18 and 2/5, Solve 4 12/18 + 2/5 as a fraction

Add 84/18 and 2/5

1^st number: 4 12/18, 2^nd number: 2/5

84/18 + 2/5 is 76/15.

Find the least common denominator or LCM of the two denominators:
LCM of 18 and 5 is 90

Next, find the equivalent fraction of both fractional numbers with denominator 90
For the 1st fraction, since 18 × 5 = 90,
84/18 = 84 × 5/18 × 5 = 420/90
Likewise, for the 2nd fraction, since 5 × 18 = 90,
2/5 = 2 × 18/5 × 18 = 36/90
Add the two like fractions:
420/90 + 36/90 = 420 + 36/90 = 456/90
456/90 simplified gives 76/15
So, 84/18 + 2/5 = 76/15
In mixed form: 51/15

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