Add 14/12 and 90/70, Solve 1 2/12 + 1 20/70 as a fraction

Add 14/12 and 90/70

1^st number: 1 2/12, 2^nd number: 1 20/70

14/12 + 90/70 is 103/42.

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,
14/12 = 14 × 35/12 × 35 = 490/420
Likewise, for the 2nd fraction, since 70 × 6 = 420,
90/70 = 90 × 6/70 × 6 = 540/420
Add the two like fractions:
490/420 + 540/420 = 490 + 540/420 = 1030/420
1030/420 simplified gives 103/42
So, 14/12 + 90/70 = 103/42
In mixed form: 219/42

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