Add 18/72 and 90/40
1st number: 18/72, 2nd number: 2 10/40
18/72 + 90/40 is 5/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 40 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 40 × 9 = 360,
90/40 = 90 × 9/40 × 9 = 810/360 - Add the two like fractions:
90/360 + 810/360 = 90 + 810/360 = 900/360 - 900/360 simplified gives 5/2
- So, 18/72 + 90/40 = 5/2
In mixed form: 21/2
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