Add 15/12 and 45/7, Solve 1 3/12 + 6 3/7 as a fraction

Add 15/12 and 45/7

1^st number: 1 3/12, 2^nd number: 6 3/7

15/12 + 45/7 is 215/28.

Find the least common denominator or LCM of the two denominators:
LCM of 12 and 7 is 84

Next, find the equivalent fraction of both fractional numbers with denominator 84
For the 1st fraction, since 12 × 7 = 84,
15/12 = 15 × 7/12 × 7 = 105/84
Likewise, for the 2nd fraction, since 7 × 12 = 84,
45/7 = 45 × 12/7 × 12 = 540/84
Add the two like fractions:
105/84 + 540/84 = 105 + 540/84 = 645/84
645/84 simplified gives 215/28
So, 15/12 + 45/7 = 215/28
In mixed form: 719/28

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