Add 54/72 and 70/84, Solve 54/72 + 70/84 as a fraction

Add 54/72 and 70/84

54/72 + 70/84 is 19/12.

Find the least common denominator or LCM of the two denominators:
LCM of 72 and 84 is 504

Next, find the equivalent fraction of both fractional numbers with denominator 504
For the 1st fraction, since 72 × 7 = 504,
54/72 = 54 × 7/72 × 7 = 378/504
Likewise, for the 2nd fraction, since 84 × 6 = 504,
70/84 = 70 × 6/84 × 6 = 420/504
Add the two like fractions:
378/504 + 420/504 = 378 + 420/504 = 798/504
798/504 simplified gives 19/12
So, 54/72 + 70/84 = 19/12
In mixed form: 17/12

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