Add 28/12 and 40/70, Solve 2 4/12 + 40/70 as a fraction

Add 28/12 and 40/70

1^st number: 2 4/12, 2^nd number: 40/70

28/12 + 40/70 is 61/21.

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

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 12 × 35 = 420,
28/12 = 28 × 35/12 × 35 = 980/420
Likewise, for the 2nd fraction, since 70 × 6 = 420,
40/70 = 40 × 6/70 × 6 = 240/420
Add the two like fractions:
980/420 + 240/420 = 980 + 240/420 = 1220/420
1220/420 simplified gives 61/21
So, 28/12 + 40/70 = 61/21
In mixed form: 219/21

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