Add 75/20 and 45/90
1st number: 3 15/20, 2nd number: 45/90
75/20 + 45/90 is 17/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
75/20 = 75 × 9/20 × 9 = 675/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
45/90 = 45 × 2/90 × 2 = 90/180 - Add the two like fractions:
675/180 + 90/180 = 675 + 90/180 = 765/180 - 765/180 simplified gives 17/4
- So, 75/20 + 45/90 = 17/4
In mixed form: 41/4
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