Add 70/21 and 80/6, Solve 3 7/21 + 13 2/6 as a fraction

Add 70/21 and 80/6

1^st number: 3 7/21, 2^nd number: 13 2/6

70/21 + 80/6 is 50/3.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 6 is 42

Next, find the equivalent fraction of both fractional numbers with denominator 42
For the 1st fraction, since 21 × 2 = 42,
70/21 = 70 × 2/21 × 2 = 140/42
Likewise, for the 2nd fraction, since 6 × 7 = 42,
80/6 = 80 × 7/6 × 7 = 560/42
Add the two like fractions:
140/42 + 560/42 = 140 + 560/42 = 700/42
700/42 simplified gives 50/3
So, 70/21 + 80/6 = 50/3
In mixed form: 162/3

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