Add 28/80 and 70/90
28/80 + 70/90 is 203/180.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 90 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 80 × 9 = 720,
28/80 = 28 × 9/80 × 9 = 252/720 - Likewise, for the 2nd fraction, since 90 × 8 = 720,
70/90 = 70 × 8/90 × 8 = 560/720 - Add the two like fractions:
252/720 + 560/720 = 252 + 560/720 = 812/720 - 812/720 simplified gives 203/180
- So, 28/80 + 70/90 = 203/180
In mixed form: 123/180
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