1 : 1/x + 0,5 : 1/x 0,25  : 1/x + 0,125 : 1/x = 15/4

To solve this equation, we need to find the value of x that satisfies the equation:

1/x + 0.5/x + 0.25/x + 0.125/x = 15/4

Combining the fractions on the left side, we have:

(1 + 0.5 + 0.25 + 0.125)/x = 15/4

Simplifying the numerator on the left side:

1.875/x = 15/4

Cross-multiplying:

4 * 1.875 = 15 * x

7.5 = 15x

Dividing both sides by 15:

7.5/15 = x

0.5 = x

Therefore, the value of x that satisfies the equation is 0.5.