Add 90/5 and 75/20
1st number: 18 0/5, 2nd number: 3 15/20
90/5 + 75/20 is 87/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 20 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 5 × 4 = 20,
90/5 = 90 × 4/5 × 4 = 360/20 - Likewise, for the 2nd fraction, since 20 × 1 = 20,
75/20 = 75 × 1/20 × 1 = 75/20 - Add the two like fractions:
360/20 + 75/20 = 360 + 75/20 = 435/20 - 435/20 simplified gives 87/4
- So, 90/5 + 75/20 = 87/4
In mixed form: 213/4
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