redfoxthrtysix
redfoxthrtysix redfoxthrtysix
  • 04-08-2018
  • Mathematics
contestada

Solve for x. 5/2x+3=4/x

Respuesta :

gmany
gmany gmany
  • 06-08-2018

[tex]\text{The domain:}\\2x+3\neq0\ \vee\ x\neq0\\\\D:x\in\mathbb{R}-\{-1.5,\ 0\}[/tex]

[tex]\dfrac{5}{2x+3}=\dfrac{4}{x}\ \ \ |\text{cross multiply}\\\\5x=4(2x+3)\\\\5x=8x+12\ \ \ |-8x\\\\-3x=12\ \ \ \ |:(-3)\\\\x=-4\in D[/tex]

Answer: x = -4

Answer Link

Otras preguntas

NaOH  + H2SO4 =NaOH + HNO3  =Cu(OH)2 + HCl =                H2SO4 =                        HNO3 =
If you multiply a number by five and then subtract negative ten, the difference is negative thirty. What is the number?
find the difference: 7 7/8 - 3 1/4
List two factors that might cause an organism to restrict its use of a resource.
Work out the number that is halfway between 27 times 38 and 33 times 38.Show your working out aswell.
What are 2 numbers that when multiplied together you get 360 and when added together you get -96
20% of my money is £2.55 What is 2/5 of it?
what are the landforms of vermont
Determine the half-life of potassium if in 3460 years a 200 g sample decayed into 25 g
Work out the number that is halfway between 27 times 38 and 33 times 38.Show your working out aswell.