Add 18/45 and 90/40
1st number: 18/45, 2nd number: 2 10/40
18/45 + 90/40 is 53/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 45 × 8 = 360,
18/45 = 18 × 8/45 × 8 = 144/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
90/40 = 90 × 9/40 × 9 = 810/360 - Add the two like fractions:
144/360 + 810/360 = 144 + 810/360 = 954/360 - 954/360 simplified gives 53/20
- So, 18/45 + 90/40 = 53/20
In mixed form: 213/20
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