Add 42/20 and 72/30
1st number: 2 2/20, 2nd number: 2 12/30
42/20 + 72/30 is 9/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 30 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 20 × 3 = 60,
42/20 = 42 × 3/20 × 3 = 126/60 - Likewise, for the 2nd fraction, since 30 × 2 = 60,
72/30 = 72 × 2/30 × 2 = 144/60 - Add the two like fractions:
126/60 + 144/60 = 126 + 144/60 = 270/60 - 270/60 simplified gives 9/2
- So, 42/20 + 72/30 = 9/2
In mixed form: 41/2
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