Add 21/45 and 42/10, Solve 21/45 + 4 2/10 as a fraction

Add 21/45 and 42/10

1^st number: 21/45, 2^nd number: 4 2/10

21/45 + 42/10 is 14/3.

Find the least common denominator or LCM of the two denominators:
LCM of 45 and 10 is 90

Next, find the equivalent fraction of both fractional numbers with denominator 90
For the 1st fraction, since 45 × 2 = 90,
21/45 = 21 × 2/45 × 2 = 42/90
Likewise, for the 2nd fraction, since 10 × 9 = 90,
42/10 = 42 × 9/10 × 9 = 378/90
Add the two like fractions:
42/90 + 378/90 = 42 + 378/90 = 420/90
420/90 simplified gives 14/3
So, 21/45 + 42/10 = 14/3
In mixed form: 42/3

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