Add 63/42 and 70/36, Solve 1 21/42 + 1 34/36 as a fraction

Add 63/42 and 70/36

1^st number: 1 21/42, 2^nd number: 1 34/36

63/42 + 70/36 is 31/9.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 36 is 252

Next, find the equivalent fraction of both fractional numbers with denominator 252
For the 1st fraction, since 42 × 6 = 252,
63/42 = 63 × 6/42 × 6 = 378/252
Likewise, for the 2nd fraction, since 36 × 7 = 252,
70/36 = 70 × 7/36 × 7 = 490/252
Add the two like fractions:
378/252 + 490/252 = 378 + 490/252 = 868/252
868/252 simplified gives 31/9
So, 63/42 + 70/36 = 31/9
In mixed form: 34/9

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