Add 12/80 and 60/42, Solve 12/80 + 1 18/42 as a fraction

Add 12/80 and 60/42

1^st number: 12/80, 2^nd number: 1 18/42

12/80 + 60/42 is 221/140.

Find the least common denominator or LCM of the two denominators:
LCM of 80 and 42 is 1680

Next, find the equivalent fraction of both fractional numbers with denominator 1680
For the 1st fraction, since 80 × 21 = 1680,
12/80 = 12 × 21/80 × 21 = 252/1680
Likewise, for the 2nd fraction, since 42 × 40 = 1680,
60/42 = 60 × 40/42 × 40 = 2400/1680
Add the two like fractions:
252/1680 + 2400/1680 = 252 + 2400/1680 = 2652/1680
2652/1680 simplified gives 221/140
So, 12/80 + 60/42 = 221/140
In mixed form: 181/140

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