Add 54/63 and 42/72, Solve 54/63 + 42/72 as a fraction

Add 54/63 and 42/72

54/63 + 42/72 is 121/84.

Find the least common denominator or LCM of the two denominators:
LCM of 63 and 72 is 504

Next, find the equivalent fraction of both fractional numbers with denominator 504
For the 1st fraction, since 63 × 8 = 504,
54/63 = 54 × 8/63 × 8 = 432/504
Likewise, for the 2nd fraction, since 72 × 7 = 504,
42/72 = 42 × 7/72 × 7 = 294/504
Add the two like fractions:
432/504 + 294/504 = 432 + 294/504 = 726/504
726/504 simplified gives 121/84
So, 54/63 + 42/72 = 121/84
In mixed form: 137/84

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