Add 12/80 and 56/42, Solve 12/80 + 1 14/42 as a fraction

Add 12/80 and 56/42

1^st number: 12/80, 2^nd number: 1 14/42

12/80 + 56/42 is 89/60.

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,
56/42 = 56 × 40/42 × 40 = 2240/1680
Add the two like fractions:
252/1680 + 2240/1680 = 252 + 2240/1680 = 2492/1680
2492/1680 simplified gives 89/60
So, 12/80 + 56/42 = 89/60
In mixed form: 129/60

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