Question

640:(2x-4)=80................. ​

Answer 1

Пошаговое объяснение:

640 : (2х - 4) = 80

2х - 4 = 640 : 80

2х - 4 = 8

2х = 4 + 8

2х = 12

х = 12 : 2

х = 6

640 : (2 • 6 - 4) = 80

80 = 80

Answer 2

To solve for the variable $x$ in the equation $640 : (2x - 4) = 80$, follow these steps:

Step 1: Distribute the division on the left side of the equation: $640 : (2x - 4) = 80 \Rightarrow \frac{640}{2x - 4} = 80$

Step 2: Cross-multiply: $640 = 80 \cdot (2x - 4)$

Step 3: Divide both sides by 80: $\frac{640}{80} = 2x - 4$ $8 = 2x - 4$

Step 4: Add 4 to both sides: $8 + 4 = 2x$ $12 = 2x$

Step 5: Divide by 2: $x = \frac{12}{2}$ $x = 6$

So, the solution to the equation is $x = 6$.