Add 80/14 and 70/42, Solve 5 10/14 + 1 28/42 as a fraction

Add 80/14 and 70/42

1^st number: 5 10/14, 2^nd number: 1 28/42

80/14 + 70/42 is 155/21.

Find the least common denominator or LCM of the two denominators:
LCM of 14 and 42 is 42

Next, find the equivalent fraction of both fractional numbers with denominator 42
For the 1st fraction, since 14 × 3 = 42,
80/14 = 80 × 3/14 × 3 = 240/42
Likewise, for the 2nd fraction, since 42 × 1 = 42,
70/42 = 70 × 1/42 × 1 = 70/42
Add the two like fractions:
240/42 + 70/42 = 240 + 70/42 = 310/42
310/42 simplified gives 155/21
So, 80/14 + 70/42 = 155/21
In mixed form: 78/21

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