Add 90/25 and 18/40
1st number: 3 15/25, 2nd number: 18/40
90/25 + 18/40 is 81/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 40 is 200
Next, find the equivalent fraction of both fractional numbers with denominator 200 - For the 1st fraction, since 25 × 8 = 200,
90/25 = 90 × 8/25 × 8 = 720/200 - Likewise, for the 2nd fraction, since 40 × 5 = 200,
18/40 = 18 × 5/40 × 5 = 90/200 - Add the two like fractions:
720/200 + 90/200 = 720 + 90/200 = 810/200 - 810/200 simplified gives 81/20
- So, 90/25 + 18/40 = 81/20
In mixed form: 41/20
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