Question

0,4x-2,5 4 _______ = _ 6. 5

Answer 1

Пошаговое объяснение:

0,4 · х - 2,54

------------------   =  -3,396/6,5 = 3,4/6,5

  6,5

х = 0,4 - 2,54

х = -2,14

0,4 · -2,14 = -0,856

0,856 - 2,54 = −3,396

Answer 2

To solve the equation, let's first write it out clearly:

(0.4x - 2) / 4 = 5 / 6

To solve for x, we need to isolate x on one side of the equation. Here's the step-by-step solution:

Step 1: Multiply both sides of the equation by 4 to eliminate the fraction on the left side.

4 * ((0.4x - 2) / 4) = 4 * (5 / 6)

0.4x - 2 = (20 / 6)

Step 2: Add 2 to both sides of the equation to get rid of the constant term on the left side.

0.4x - 2 + 2 = (20 / 6) + 2

0.4x = (20 / 6) + (12 / 6)

Step 3: Combine the fractions on the right side.

0.4x = (32 / 6)

Step 4: Simplify the fraction on the right side.

0.4x = (16 / 3)

Step 5: Now, to solve for x, divide both sides by 0.4.

(0.4x) / 0.4 = (16 / 3) / 0.4

x = (16 / 3) * (1 / 0.4)

x = (16 / 3) * (10 / 4)

Step 6: Finally, simplify and compute the value of x.

x = 40 / 12

x = 10 / 3

So, the value of x is 10 / 3 or approximately 3.33.