Add 5/21 and 70/54, Solve 5/21 + 1 16/54 as a fraction

Add 5/21 and 70/54

1^st number: 5/21, 2^nd number: 1 16/54

5/21 + 70/54 is 290/189.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 54 is 378

Next, find the equivalent fraction of both fractional numbers with denominator 378
For the 1st fraction, since 21 × 18 = 378,
5/21 = 5 × 18/21 × 18 = 90/378
Likewise, for the 2nd fraction, since 54 × 7 = 378,
70/54 = 70 × 7/54 × 7 = 490/378
Add the two like fractions:
90/378 + 490/378 = 90 + 490/378 = 580/378
580/378 simplified gives 290/189
So, 5/21 + 70/54 = 290/189
In mixed form: 1101/189

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