Add 90/20 and 70/9
1st number: 4 10/20, 2nd number: 7 7/9
90/20 + 70/9 is 221/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 9 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
90/20 = 90 × 9/20 × 9 = 810/180 - Likewise, for the 2nd fraction, since 9 × 20 = 180,
70/9 = 70 × 20/9 × 20 = 1400/180 - Add the two like fractions:
810/180 + 1400/180 = 810 + 1400/180 = 2210/180 - 2210/180 simplified gives 221/18
- So, 90/20 + 70/9 = 221/18
In mixed form: 125/18
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