Add 72/60 and 81/72, Solve 1 12/60 + 1 9/72 as a fraction

Add 72/60 and 81/72

1^st number: 1 12/60, 2^nd number: 1 9/72

72/60 + 81/72 is 93/40.

Find the least common denominator or LCM of the two denominators:
LCM of 60 and 72 is 360

Next, find the equivalent fraction of both fractional numbers with denominator 360
For the 1st fraction, since 60 × 6 = 360,
72/60 = 72 × 6/60 × 6 = 432/360
Likewise, for the 2nd fraction, since 72 × 5 = 360,
81/72 = 81 × 5/72 × 5 = 405/360
Add the two like fractions:
432/360 + 405/360 = 432 + 405/360 = 837/360
837/360 simplified gives 93/40
So, 72/60 + 81/72 = 93/40
In mixed form: 213/40

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