Add 54/12 and 90/7, Solve 4 6/12 + 12 6/7 as a fraction

Add 54/12 and 90/7

1^st number: 4 6/12, 2^nd number: 12 6/7

54/12 + 90/7 is 243/14.

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,
54/12 = 54 × 7/12 × 7 = 378/84
Likewise, for the 2nd fraction, since 7 × 12 = 84,
90/7 = 90 × 12/7 × 12 = 1080/84
Add the two like fractions:
378/84 + 1080/84 = 378 + 1080/84 = 1458/84
1458/84 simplified gives 243/14
So, 54/12 + 90/7 = 243/14
In mixed form: 175/14

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