PreCalculus
posted by Caroline .
I have to use the substitution method to solve the system of equations.
4xy=9 and 2x+3y=12
I worked this problem myself and could not find a possible solution. So I put that it is inconsistent. Is that correct? If not could you please help me?

PreCalculus 
Reiny
from the 1st > 4x9 = y
sub that into the 2nd
2x + 3(4x9) = 12
2x + 12x  27 = 12
14x = 39
x = 39/14
y = 4(39/14)  9 = 15/7
check:
1st:
LS = 4(39/14)  15/7
= 156/14  30/14
= 126/14 = 9 = RS
2nd:
LS = 2(39/14) + 3(15/7)
= 39/7+ 45/7
= 84/7 = 12 = RS
Respond to this Question
Similar Questions

Substitution Method
Use the Substitution method to solve the system of equations. x + y = 4 x  y = 2 x + y = 4 x  y = 2 In the second equation, x= y+2 Putting that in the first.. (y+2) + y= 4 subtract two from each side, then divide each side by … 
Substitution MethodPlz help
Use the Substitution method to solve the system of equations. x + y = 4 x  y = 2 solve for x in the second equation. x= y+2 Put that in for x in the first equation: x+y=4 (y+2) + y = 4 solve for y. Then, x= y+2 i don't get it.How … 
Linear Equations
Can you please help solve this equation using the substitution method? 
algebra
Can someone please help. When you solve a system of equations by the substitution method, how do you determine whether the system of equations is inconsistent? 
algebra
Can someone help me figure this out please? 
algebra
When you solve a system of equations by the substitution method, how do you determine whether the system of equations is inconsistent? 
AlgebraMultiple choice
Hello, I have some practice math I'm working through and I'm unsure about the answer. I will also put what I got. Thanks for the help. 1. Solve using any method and identify the system as consistent, inconsistent, or dependent. 2x+y=8 … 
Algebra Multiple Choice
Hello, This is the last of questions I have for my practice assignment. Again I will put what I got. Thanks for your help. 1.) Solve the system using substitution. Write answer as an ordered pair. 4x+2y=8 5x2=y A.) First equation … 
pre calculus honors
solve the system if possible  x+y+z = 15   < 7x+y+z = 75    3x+yz=29 a. x=10,y=2,z=3 b. x=–10,y=–2,z=–3 c. x=3,y=10,z=–3 d. x=12,y=9,z=–3 e. no solution; inconsistent system 
Algebra PLEASE HELP!!
What advantages does the method of substitution have over graphing for solving systems of equations?