Add 90/21 and 12/30, Solve 4 6/21 + 12/30 as a fraction

Add 90/21 and 12/30

1^st number: 4 6/21, 2^nd number: 12/30

90/21 + 12/30 is 164/35.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 30 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 21 × 10 = 210,
90/21 = 90 × 10/21 × 10 = 900/210
Likewise, for the 2nd fraction, since 30 × 7 = 210,
12/30 = 12 × 7/30 × 7 = 84/210
Add the two like fractions:
900/210 + 84/210 = 900 + 84/210 = 984/210
984/210 simplified gives 164/35
So, 90/21 + 12/30 = 164/35
In mixed form: 424/35

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