Add 30/21 and 70/30, Solve 1 9/21 + 2 10/30 as a fraction

Add 30/21 and 70/30

1^st number: 1 9/21, 2^nd number: 2 10/30

30/21 + 70/30 is 79/21.

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,
30/21 = 30 × 10/21 × 10 = 300/210
Likewise, for the 2nd fraction, since 30 × 7 = 210,
70/30 = 70 × 7/30 × 7 = 490/210
Add the two like fractions:
300/210 + 490/210 = 300 + 490/210 = 790/210
790/210 simplified gives 79/21
So, 30/21 + 70/30 = 79/21
In mixed form: 316/21

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