Add 90/21 and 40/54, Solve 4 6/21 + 40/54 as a fraction

Add 90/21 and 40/54

1^st number: 4 6/21, 2^nd number: 40/54

90/21 + 40/54 is 950/189.

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,
90/21 = 90 × 18/21 × 18 = 1620/378
Likewise, for the 2nd fraction, since 54 × 7 = 378,
40/54 = 40 × 7/54 × 7 = 280/378
Add the two like fractions:
1620/378 + 280/378 = 1620 + 280/378 = 1900/378
1900/378 simplified gives 950/189
So, 90/21 + 40/54 = 950/189
In mixed form: 55/189

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