Question

4,2 3,9 —— = —— 1,4 2х+3,2

Answer 1

Решай как пропорцию:
4,2(2х+3,2)=1,4·3,9                                2х+3,2≠0,   х≠-1,6
4,2(2х+3,2)=5,46
2х+3,2=5,46:4,2
2х+3,2=1,3
2х=1,3-3,2
2х=-1,9
х=-0,95

Answer 2

To solve the equation:

(4.2)/(3.9) = (1.4)/(2x + 3.2)

We can start by cross-multiplying:

(4.2) * (2x + 3.2) = (3.9) * (1.4)

Expanding both sides of the equation:

8.4x + 13.44 = 5.46

Next, let's isolate the variable x. Subtract 13.44 from both sides:

8.4x = 5.46 - 13.44

Simplifying the right side:

8.4x = -7.98

Now, divide both sides by 8.4 to solve for x:

x = (-7.98) / (8.4)

Calculating the value:

x ≈ -0.95

Therefore, the solution to the equation is x ≈ -0.95.