Add 72/18 and 60/21, Solve 4 0/18 + 2 18/21 as a fraction

Add 72/18 and 60/21

1^st number: 4 0/18, 2^nd number: 2 18/21

72/18 + 60/21 is 48/7.

Find the least common denominator or LCM of the two denominators:
LCM of 18 and 21 is 126

Next, find the equivalent fraction of both fractional numbers with denominator 126
For the 1st fraction, since 18 × 7 = 126,
72/18 = 72 × 7/18 × 7 = 504/126
Likewise, for the 2nd fraction, since 21 × 6 = 126,
60/21 = 60 × 6/21 × 6 = 360/126
Add the two like fractions:
504/126 + 360/126 = 504 + 360/126 = 864/126
864/126 simplified gives 48/7
So, 72/18 + 60/21 = 48/7
In mixed form: 66/7

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