Add 72/60 and 45/42, Solve 1 12/60 + 1 3/42 as a fraction

Add 72/60 and 45/42

1^st number: 1 12/60, 2^nd number: 1 3/42

72/60 + 45/42 is 159/70.

Find the least common denominator or LCM of the two denominators:
LCM of 60 and 42 is 420

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 60 × 7 = 420,
72/60 = 72 × 7/60 × 7 = 504/420
Likewise, for the 2nd fraction, since 42 × 10 = 420,
45/42 = 45 × 10/42 × 10 = 450/420
Add the two like fractions:
504/420 + 450/420 = 504 + 450/420 = 954/420
954/420 simplified gives 159/70
So, 72/60 + 45/42 = 159/70
In mixed form: 219/70

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