Add 54/21 and 5/80, Solve 2 12/21 + 5/80 as a fraction

Add 54/21 and 5/80

1^st number: 2 12/21, 2^nd number: 5/80

54/21 + 5/80 is 295/112.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 80 is 1680

Next, find the equivalent fraction of both fractional numbers with denominator 1680
For the 1st fraction, since 21 × 80 = 1680,
54/21 = 54 × 80/21 × 80 = 4320/1680
Likewise, for the 2nd fraction, since 80 × 21 = 1680,
5/80 = 5 × 21/80 × 21 = 105/1680
Add the two like fractions:
4320/1680 + 105/1680 = 4320 + 105/1680 = 4425/1680
4425/1680 simplified gives 295/112
So, 54/21 + 5/80 = 295/112
In mixed form: 271/112

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