Add 30/50 and 90/21, Solve 30/50 + 4 6/21 as a fraction

Add 30/50 and 90/21

1^st number: 30/50, 2^nd number: 4 6/21

30/50 + 90/21 is 171/35.

Find the least common denominator or LCM of the two denominators:
LCM of 50 and 21 is 1050

Next, find the equivalent fraction of both fractional numbers with denominator 1050
For the 1st fraction, since 50 × 21 = 1050,
30/50 = 30 × 21/50 × 21 = 630/1050
Likewise, for the 2nd fraction, since 21 × 50 = 1050,
90/21 = 90 × 50/21 × 50 = 4500/1050
Add the two like fractions:
630/1050 + 4500/1050 = 630 + 4500/1050 = 5130/1050
5130/1050 simplified gives 171/35
So, 30/50 + 90/21 = 171/35
In mixed form: 431/35

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