Add 60/70 and 21/12, Solve 60/70 + 1 9/12 as a fraction

Add 60/70 and 21/12

1^st number: 60/70, 2^nd number: 1 9/12

60/70 + 21/12 is 73/28.

Find the least common denominator or LCM of the two denominators:
LCM of 70 and 12 is 420

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 70 × 6 = 420,
60/70 = 60 × 6/70 × 6 = 360/420
Likewise, for the 2nd fraction, since 12 × 35 = 420,
21/12 = 21 × 35/12 × 35 = 735/420
Add the two like fractions:
360/420 + 735/420 = 360 + 735/420 = 1095/420
1095/420 simplified gives 73/28
So, 60/70 + 21/12 = 73/28
In mixed form: 217/28

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