Add 18/72 and 21/5
1st number: 18/72, 2nd number: 4 1/5
18/72 + 21/5 is 89/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 5 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
18/72 = 18 × 5/72 × 5 = 90/360 - Likewise, for the 2nd fraction, since 5 × 72 = 360,
21/5 = 21 × 72/5 × 72 = 1512/360 - Add the two like fractions:
90/360 + 1512/360 = 90 + 1512/360 = 1602/360 - 1602/360 simplified gives 89/20
- So, 18/72 + 21/5 = 89/20
In mixed form: 49/20
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