Add 20/42 and 45/7, Solve 20/42 + 6 3/7 as a fraction

Add 20/42 and 45/7

1^st number: 20/42, 2^nd number: 6 3/7

20/42 + 45/7 is 145/21.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 7 is 42

Next, find the equivalent fraction of both fractional numbers with denominator 42
For the 1st fraction, since 42 × 1 = 42,
20/42 = 20 × 1/42 × 1 = 20/42
Likewise, for the 2nd fraction, since 7 × 6 = 42,
45/7 = 45 × 6/7 × 6 = 270/42
Add the two like fractions:
20/42 + 270/42 = 20 + 270/42 = 290/42
290/42 simplified gives 145/21
So, 20/42 + 45/7 = 145/21
In mixed form: 619/21

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