Add 70/54 and 21/42, Solve 1 16/54 + 21/42 as a fraction

Add 70/54 and 21/42

1^st number: 1 16/54, 2^nd number: 21/42

70/54 + 21/42 is 97/54.

Find the least common denominator or LCM of the two denominators:
LCM of 54 and 42 is 378

Next, find the equivalent fraction of both fractional numbers with denominator 378
For the 1st fraction, since 54 × 7 = 378,
70/54 = 70 × 7/54 × 7 = 490/378
Likewise, for the 2nd fraction, since 42 × 9 = 378,
21/42 = 21 × 9/42 × 9 = 189/378
Add the two like fractions:
490/378 + 189/378 = 490 + 189/378 = 679/378
679/378 simplified gives 97/54
So, 70/54 + 21/42 = 97/54
In mixed form: 143/54

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