SOLUTION: Solve the system using substitution 3x+2y=9 x=4-y

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Question 581609: Solve the system using substitution
3x+2y=9
x=4-y
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
3x+2y=9

3(4-y)+2y=9

12-3y+2y=9

-y+12=9

-y=9-12

-y=-3

y=(-3)/(-1)

y=3
--------------------
x = 4-y

x = 4-3

x = 1


So the solutions are x = 1 and y = 3


This means that the system is consistent and independent.