Add 28/72 and 84/20
1st number: 28/72, 2nd number: 4 4/20
28/72 + 84/20 is 413/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 20 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
28/72 = 28 × 5/72 × 5 = 140/360 - Likewise, for the 2nd fraction, since 20 × 18 = 360,
84/20 = 84 × 18/20 × 18 = 1512/360 - Add the two like fractions:
140/360 + 1512/360 = 140 + 1512/360 = 1652/360 - 1652/360 simplified gives 413/90
- So, 28/72 + 84/20 = 413/90
In mixed form: 453/90
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