Add 28/45 and 70/80
28/45 + 70/80 is 539/360.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 80 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 45 × 16 = 720,
28/45 = 28 × 16/45 × 16 = 448/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
70/80 = 70 × 9/80 × 9 = 630/720 - Add the two like fractions:
448/720 + 630/720 = 448 + 630/720 = 1078/720 - 1078/720 simplified gives 539/360
- So, 28/45 + 70/80 = 539/360
In mixed form: 1179/360
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