Add 90/80 and 70/9
1st number: 1 10/80, 2nd number: 7 7/9
90/80 + 70/9 is 641/72.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 9 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 80 × 9 = 720,
90/80 = 90 × 9/80 × 9 = 810/720 - Likewise, for the 2nd fraction, since 9 × 80 = 720,
70/9 = 70 × 80/9 × 80 = 5600/720 - Add the two like fractions:
810/720 + 5600/720 = 810 + 5600/720 = 6410/720 - 6410/720 simplified gives 641/72
- So, 90/80 + 70/9 = 641/72
In mixed form: 865/72
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