jodiison01 jodiison01
  • 16-05-2020
  • Mathematics
contestada

3/x-4=7/x

solve for x

Respuesta :

wegnerkolmp2741o
wegnerkolmp2741o wegnerkolmp2741o
  • 18-05-2020

Answer:

x=7

Step-by-step explanation:

3/x-4=7/x

Using cross products

3 * x = 7 (x-4)

Distribute

3x = 7x -28

Subtract 7x from each side

3x-7x = 7x-7x-28

-4x = -28

Divide each side by -4

-4x/-4 = -28/-4

x = 7

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