Add 21/72 and 42/30, Solve 21/72 + 1 12/30 as a fraction

Add 21/72 and 42/30

1^st number: 21/72, 2^nd number: 1 12/30

21/72 + 42/30 is 203/120.

Find the least common denominator or LCM of the two denominators:
LCM of 72 and 30 is 360

Next, find the equivalent fraction of both fractional numbers with denominator 360
For the 1st fraction, since 72 × 5 = 360,
21/72 = 21 × 5/72 × 5 = 105/360
Likewise, for the 2nd fraction, since 30 × 12 = 360,
42/30 = 42 × 12/30 × 12 = 504/360
Add the two like fractions:
105/360 + 504/360 = 105 + 504/360 = 609/360
609/360 simplified gives 203/120
So, 21/72 + 42/30 = 203/120
In mixed form: 183/120

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