0.83333333333 repeating as a fraction

100x=83.3333333...
10x= 8.3333333...

Then subtract these formulas since you already KNOW that x is the same in both equations. Using 100x and 10x you get the exact same repeating decimal, but the decimal gets subtracted out therefore simplfying the equation greatly:

90x=75

To solve this equation, divide both sides by 90 and you get:
x=75/90

Simplfy: x=5/6

Photo math will give you the step by step answer : )