Solutions by everydaycalculation.com

516 + 8090 is 173144.

- Find the least common denominator or LCM of the two denominators:

LCM of 16 and 90 is**720**

Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 16 × 45 = 720,

516 = 5 × 4516 × 45 = 225720 - Likewise, for the 2nd fraction, since 90 × 8 = 720,

8090 = 80 × 890 × 8 = 640720 - Add the two like fractions:

225720 + 640720 = 225 + 640720 = 865720 - 865/720 simplified gives 173144
- So, 5/16 + 80/90 = 173/144

In mixed form: 129144

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