Add 72/45 and 40/20
1st number: 1 27/45, 2nd number: 2 0/20
72/45 + 40/20 is 18/5.
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,
40/20 = 40 × 9/20 × 9 = 360/180 - Add the two like fractions:
288/180 + 360/180 = 288 + 360/180 = 648/180 - 648/180 simplified gives 18/5
- So, 72/45 + 40/20 = 18/5
In mixed form: 33/5
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