Add 12/10 and 30/84, Solve 1 2/10 + 30/84 as a fraction

Add 12/10 and 30/84

1^st number: 1 2/10, 2^nd number: 30/84

12/10 + 30/84 is 109/70.

Find the least common denominator or LCM of the two denominators:
LCM of 10 and 84 is 420

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 10 × 42 = 420,
12/10 = 12 × 42/10 × 42 = 504/420
Likewise, for the 2nd fraction, since 84 × 5 = 420,
30/84 = 30 × 5/84 × 5 = 150/420
Add the two like fractions:
504/420 + 150/420 = 504 + 150/420 = 654/420
654/420 simplified gives 109/70
So, 12/10 + 30/84 = 109/70
In mixed form: 139/70

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