Add 30/45 and 10/21, Solve 30/45 + 10/21 as a fraction

Add 30/45 and 10/21

30/45 + 10/21 is 8/7.

Find the least common denominator or LCM of the two denominators:
LCM of 45 and 21 is 315

Next, find the equivalent fraction of both fractional numbers with denominator 315
For the 1st fraction, since 45 × 7 = 315,
30/45 = 30 × 7/45 × 7 = 210/315
Likewise, for the 2nd fraction, since 21 × 15 = 315,
10/21 = 10 × 15/21 × 15 = 150/315
Add the two like fractions:
210/315 + 150/315 = 210 + 150/315 = 360/315
360/315 simplified gives 8/7
So, 30/45 + 10/21 = 8/7
In mixed form: 11/7

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