Add 21/6 and 70/72, Solve 3 3/6 + 70/72 as a fraction

Add 21/6 and 70/72

1^st number: 3 3/6, 2^nd number: 70/72

21/6 + 70/72 is 161/36.

Find the least common denominator or LCM of the two denominators:
LCM of 6 and 72 is 72

Next, find the equivalent fraction of both fractional numbers with denominator 72
For the 1st fraction, since 6 × 12 = 72,
21/6 = 21 × 12/6 × 12 = 252/72
Likewise, for the 2nd fraction, since 72 × 1 = 72,
70/72 = 70 × 1/72 × 1 = 70/72
Add the two like fractions:
252/72 + 70/72 = 252 + 70/72 = 322/72
322/72 simplified gives 161/36
So, 21/6 + 70/72 = 161/36
In mixed form: 417/36

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