Solutions by everydaycalculation.com

1^{st} number: 1 7/8, 2^{nd} number: 80/90

158 + 8090 is 19972.

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

LCM of 8 and 90 is**360**

Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 8 × 45 = 360,

158 = 15 × 458 × 45 = 675360 - Likewise, for the 2nd fraction, since 90 × 4 = 360,

8090 = 80 × 490 × 4 = 320360 - Add the two like fractions:

675360 + 320360 = 675 + 320360 = 995360 - 995/360 simplified gives 19972
- So, 15/8 + 80/90 = 199/72

In mixed form: 25572

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