Add 84/18 and 40/72, Solve 4 12/18 + 40/72 as a fraction

Add 84/18 and 40/72

1^st number: 4 12/18, 2^nd number: 40/72

84/18 + 40/72 is 47/9.

Find the least common denominator or LCM of the two denominators:
LCM of 18 and 72 is 72

Next, find the equivalent fraction of both fractional numbers with denominator 72
For the 1st fraction, since 18 × 4 = 72,
84/18 = 84 × 4/18 × 4 = 336/72
Likewise, for the 2nd fraction, since 72 × 1 = 72,
40/72 = 40 × 1/72 × 1 = 40/72
Add the two like fractions:
336/72 + 40/72 = 336 + 40/72 = 376/72
376/72 simplified gives 47/9
So, 84/18 + 40/72 = 47/9
In mixed form: 52/9

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