Add 21/3 and 21/45, Solve 7 0/3 + 21/45 as a fraction

Add 21/3 and 21/45

1^st number: 7 0/3, 2^nd number: 21/45

21/3 + 21/45 is 112/15.

Find the least common denominator or LCM of the two denominators:
LCM of 3 and 45 is 45

Next, find the equivalent fraction of both fractional numbers with denominator 45
For the 1st fraction, since 3 × 15 = 45,
21/3 = 21 × 15/3 × 15 = 315/45
Likewise, for the 2nd fraction, since 45 × 1 = 45,
21/45 = 21 × 1/45 × 1 = 21/45
Add the two like fractions:
315/45 + 21/45 = 315 + 21/45 = 336/45
336/45 simplified gives 112/15
So, 21/3 + 21/45 = 112/15
In mixed form: 77/15

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