vflajnik
vflajnik vflajnik
  • 01-02-2022
  • Mathematics
contestada

8x/10x-2 equals 5x+3/7x solve for x

Respuesta :

somesortapapaya
somesortapapaya somesortapapaya
  • 01-02-2022

Answer:

x = [tex]\frac{1}{3}[/tex] & 3

Step-by-step explanation:

[tex]\frac{8x}{10x-2}[/tex] = [tex]\frac{5x+3}{7x}[/tex]

Cross multiply:

[tex]\frac{8x}{10x-2}[/tex] = [tex]\frac{5x+3}{7x}[/tex]   ⇒   (8x)(7x) = (5x+3)(10x-2)

Simplify both sides:

(8x)(7x) = (5x+3)(10x-2)   ⇒   56x² = 50x²+20x-6

Set equation equal to 0:

56x² = 50x²+20x-6   ⇒   0 = -6x²+20x-6

Factor the trinomial:

0 = -6x²+20x-6 = (-6x+2)(x-3)

Solve for X:

-6x+2 = 0

-6x = -2

x = [tex]\frac{1}{3}[/tex];

x-3 = 0

x = 3;

x = [tex]\frac{1}{3}[/tex], 3

Answer Link

Otras preguntas

(05.01 HC) I'll give you fifty points Prove that a line that divides two sides of a triangle proportionally is parallel to the third side. Be sure to create and
what if an atoms protons electrons and neutrons are all different?
Lisa is a pet cat called Taddy. Is pet adjective or noun
What times 1.5 gives you 10
A rectangular field is 160 long and 100m breadth .find its perimeter.​
How do you determine the y intercept of an exponential function f(x)=ab^x+k that has been both stretched and translated
rewrite as a simplified fraction. 3.5 = ?
She saw my father on the way. (change this into yes no question)​
Select the correct answer from the drop-down menu. In a right triangle, ∠θ = 43° and the side opposite to ∠θ is 6.5 centimeters long. The length of the side adj
a conclusion of the walking dance