Add 90/20 and 30/40
1st number: 4 10/20, 2nd number: 30/40
90/20 + 30/40 is 21/4.
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,
30/40 = 30 × 1/40 × 1 = 30/40 - Add the two like fractions:
180/40 + 30/40 = 180 + 30/40 = 210/40 - 210/40 simplified gives 21/4
- So, 90/20 + 30/40 = 21/4
In mixed form: 51/4
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