X-1 1/5=4/5

x - 1 1/5 = 4/5

To solve this equation in Russian, you need to isolate the variable x. Here's the step-by-step process:

1. Convert the mixed number 1 1/5 into an improper fraction. 1 1/5 = (5 * 1 + 1) / 5 = 6/5

2. Add 1 6/5 to both sides of the equation to get rid of the subtraction. x - 1 6/5 + 1 6/5 = 4/5 + 1 6/5 x = 4/5 + 1 6/5

3. Simplify the right side of the equation. x = 4/5 + 1 6/5 x = 4/5 + 6/5 x = 10/5 x = 2

So the solution to the equation x - 1 1/5 = 4/5 in Russian is x = 2.