Add 90/20 and 15/40
1st number: 4 10/20, 2nd number: 15/40
90/20 + 15/40 is 39/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 40 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 20 × 2 = 40,
90/20 = 90 × 2/20 × 2 = 180/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
15/40 = 15 × 1/40 × 1 = 15/40 - Add the two like fractions:
180/40 + 15/40 = 180 + 15/40 = 195/40 - 195/40 simplified gives 39/8
- So, 90/20 + 15/40 = 39/8
In mixed form: 47/8
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