Add 7/21 and 4/45, Solve 7/21 + 4/45 as a fraction

Add 7/21 and 4/45

7/21 + 4/45 is 19/45.

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

Next, find the equivalent fraction of both fractional numbers with denominator 315
For the 1st fraction, since 21 × 15 = 315,
7/21 = 7 × 15/21 × 15 = 105/315
Likewise, for the 2nd fraction, since 45 × 7 = 315,
4/45 = 4 × 7/45 × 7 = 28/315
Add the two like fractions:
105/315 + 28/315 = 105 + 28/315 = 133/315
133/315 simplified gives 19/45
So, 7/21 + 4/45 = 19/45

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