Add 72/18 and 81/72, Solve 4 0/18 + 1 9/72 as a fraction

Add 72/18 and 81/72

1^st number: 4 0/18, 2^nd number: 1 9/72

72/18 + 81/72 is 41/8.

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,
72/18 = 72 × 4/18 × 4 = 288/72
Likewise, for the 2nd fraction, since 72 × 1 = 72,
81/72 = 81 × 1/72 × 1 = 81/72
Add the two like fractions:
288/72 + 81/72 = 288 + 81/72 = 369/72
369/72 simplified gives 41/8
So, 72/18 + 81/72 = 41/8
In mixed form: 51/8

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