Add 70/42 and 15/12, Solve 1 28/42 + 1 3/12 as a fraction

Add 70/42 and 15/12

1^st number: 1 28/42, 2^nd number: 1 3/12

70/42 + 15/12 is 35/12.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 12 is 84

Next, find the equivalent fraction of both fractional numbers with denominator 84
For the 1st fraction, since 42 × 2 = 84,
70/42 = 70 × 2/42 × 2 = 140/84
Likewise, for the 2nd fraction, since 12 × 7 = 84,
15/12 = 15 × 7/12 × 7 = 105/84
Add the two like fractions:
140/84 + 105/84 = 140 + 105/84 = 245/84
245/84 simplified gives 35/12
So, 70/42 + 15/12 = 35/12
In mixed form: 211/12

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