Add 18/72 and 45/9, Solve 18/72 + 5 0/9 as a fraction

Add 18/72 and 45/9

1^st number: 18/72, 2^nd number: 5 0/9

18/72 + 45/9 is 21/4.

Find the least common denominator or LCM of the two denominators:
LCM of 72 and 9 is 72

Next, find the equivalent fraction of both fractional numbers with denominator 72
For the 1st fraction, since 72 × 1 = 72,
18/72 = 18 × 1/72 × 1 = 18/72
Likewise, for the 2nd fraction, since 9 × 8 = 72,
45/9 = 45 × 8/9 × 8 = 360/72
Add the two like fractions:
18/72 + 360/72 = 18 + 360/72 = 378/72
378/72 simplified gives 21/4
So, 18/72 + 45/9 = 21/4
In mixed form: 51/4

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