Add 54/21 and 63/25, Solve 2 12/21 + 2 13/25 as a fraction

Add 54/21 and 63/25

1^st number: 2 12/21, 2^nd number: 2 13/25

54/21 + 63/25 is 891/175.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 25 is 525

Next, find the equivalent fraction of both fractional numbers with denominator 525
For the 1st fraction, since 21 × 25 = 525,
54/21 = 54 × 25/21 × 25 = 1350/525
Likewise, for the 2nd fraction, since 25 × 21 = 525,
63/25 = 63 × 21/25 × 21 = 1323/525
Add the two like fractions:
1350/525 + 1323/525 = 1350 + 1323/525 = 2673/525
2673/525 simplified gives 891/175
So, 54/21 + 63/25 = 891/175
In mixed form: 516/175

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