bclaydon497
bclaydon497 bclaydon497
  • 02-03-2021
  • Mathematics
contestada


Find y
Solve the simultaneous
equations


3x + 2y = 27 3x - Y = 9
​

Respuesta :

xero099
xero099 xero099
  • 07-03-2021

Answer:

[tex]y = 6[/tex]

Step-by-step explanation:

To find [tex]y[/tex], we need to eliminate [tex]x[/tex] in this system of equations:

[tex]3\cdot x + 2\cdot y = 27[/tex] (1)

[tex]3\cdot x - y = 9[/tex] (2)

From (1) and (2):

[tex]x = \frac{27-2\cdot y}{3}[/tex]

[tex]x = \frac{9+y}{3}[/tex]

Then, we equalize both expressions and solve for [tex]y[/tex]:

[tex]\frac{27-2\cdot y}{3} = \frac{9+y}{3}[/tex]

[tex]27-2\cdot y = 9 + y[/tex]

[tex]3\cdot y = 18[/tex]

[tex]y = 6[/tex]

Answer Link

Otras preguntas

With a brief scenario that would require CPR being used. Include necessary details that a responder would need to consider when accessing the scene
Do u agree with crevecoeurs motto for emigrats
PLZ HELP ASAP What is the common name of this organism?
A rose bush has waxy leaves and petals that make it difficult for herbivores to eat. True False
Sammy ran 3 miles during P.E. How many total feet did Sammy run?
definition for chemistry​
Your company is contemplating replacing their current fleet of delivery vehicles with Nissan NV vans. You will be replacing 5 fully-depreciated vans, which you
Compute the slope of the line intersecting the points (1, 2) and (3, 8). * 1 point I’ll mark as brainiest
3 fewer than than a number ,p
thailand's physical futures