Add 70/42 and 70/12, Solve 1 28/42 + 5 10/12 as a fraction

Add 70/42 and 70/12

1^st number: 1 28/42, 2^nd number: 5 10/12

70/42 + 70/12 is 15/2.

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,
70/12 = 70 × 7/12 × 7 = 490/84
Add the two like fractions:
140/84 + 490/84 = 140 + 490/84 = 630/84
630/84 simplified gives 15/2
So, 70/42 + 70/12 = 15/2
In mixed form: 71/2

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