annazimmermana1 annazimmermana1
  • 24-08-2017
  • Mathematics
contestada

3x - y = 9
2x + y = 6
what is the solution to this using the addition method

Respuesta :

SeaLemon
SeaLemon SeaLemon
  • 24-08-2017
Add the y so they cancel out and leave you with: 5x=15

Divide the 5: x=3

Plug in the value x in any of the two equations and solve to get the value of y
(I'm picking the first one just cause)
3(3) - y = 8
Multiply: 9 -y = 9
Solve: y = 0

Answer: (3,0)
Answer Link

Otras preguntas

What is the value of the expression when a=3 and b=4
Which quadrilateral is a trapezoid?
How many more soldiers did the Americans have than the British?
If ATP production is blocked, decreased transport of material across a membrane occurs. Which type of transport would be affected
Please Help With All of them Its from hatchet btw
What is the most likely consequence of open pit mining on plant life? a. A dramatic reduction in the variety of plant species b. An increase in the number of pl
What pressure in atmospheres is equal to 45.6 K PA
identify whether the given mathematical sentences below is true or false, then write your reason. If false , write the correct answer.​
What were Rembrandt’s pieces characterized by? a. Shocking images and narratives b. Naturalism and extreme drama c. Human qualities and intense color Please s
does massaging your hair wet with your hands cause hair loss?