Add 72/45 and 42/20
1st number: 1 27/45, 2nd number: 2 2/20
72/45 + 42/20 is 37/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 45 × 4 = 180,
72/45 = 72 × 4/45 × 4 = 288/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
42/20 = 42 × 9/20 × 9 = 378/180 - Add the two like fractions:
288/180 + 378/180 = 288 + 378/180 = 666/180 - 666/180 simplified gives 37/10
- So, 72/45 + 42/20 = 37/10
In mixed form: 37/10
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