Add 10/42 and 90/54, Solve 10/42 + 1 36/54 as a fraction

Add 10/42 and 90/54

1^st number: 10/42, 2^nd number: 1 36/54

10/42 + 90/54 is 40/21.

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

Next, find the equivalent fraction of both fractional numbers with denominator 378
For the 1st fraction, since 42 × 9 = 378,
10/42 = 10 × 9/42 × 9 = 90/378
Likewise, for the 2nd fraction, since 54 × 7 = 378,
90/54 = 90 × 7/54 × 7 = 630/378
Add the two like fractions:
90/378 + 630/378 = 90 + 630/378 = 720/378
720/378 simplified gives 40/21
So, 10/42 + 90/54 = 40/21
In mixed form: 119/21

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