Add 42/21 and 36/18, Solve 2 0/21 + 2 0/18 as a fraction

Add 42/21 and 36/18

1^st number: 2 0/21, 2^nd number: 2 0/18

42/21 + 36/18 is 4/1.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 18 is 126

Next, find the equivalent fraction of both fractional numbers with denominator 126
For the 1st fraction, since 21 × 6 = 126,
42/21 = 42 × 6/21 × 6 = 252/126
Likewise, for the 2nd fraction, since 18 × 7 = 126,
36/18 = 36 × 7/18 × 7 = 252/126
Add the two like fractions:
252/126 + 252/126 = 252 + 252/126 = 504/126
504/126 simplified gives 4/1
So, 42/21 + 36/18 = 4/1

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