Add 81/90 and 50/42, Solve 81/90 + 1 8/42 as a fraction

Add 81/90 and 50/42

1^st number: 81/90, 2^nd number: 1 8/42

81/90 + 50/42 is 439/210.

Find the least common denominator or LCM of the two denominators:
LCM of 90 and 42 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 90 × 7 = 630,
81/90 = 81 × 7/90 × 7 = 567/630
Likewise, for the 2nd fraction, since 42 × 15 = 630,
50/42 = 50 × 15/42 × 15 = 750/630
Add the two like fractions:
567/630 + 750/630 = 567 + 750/630 = 1317/630
1317/630 simplified gives 439/210
So, 81/90 + 50/42 = 439/210
In mixed form: 219/210

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