SOLUTION: I am allowed to chose a method of choice...I am primarily confused by the way the equation is written. y + 2 = 0 5x - 2y= 9 Not sure how to use the sub

Algebra ->  Coordinate Systems and Linear Equations  -> Lessons -> SOLUTION: I am allowed to chose a method of choice...I am primarily confused by the way the equation is written. y + 2 = 0 5x - 2y= 9 Not sure how to use the sub      Log On


   

Question 738561: I am allowed to chose a method of choice...I am primarily confused by the way the equation is written. y + 2 = 0
5x - 2y= 9
Not sure how to use the substitution method when the "y" does not start with y=
I am also not sure how to use addition method when there is not an "x" in the first equation.
Thank you very much for your time and help in advance!!
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
y+2=0
-2 -2
Y=-2
SUBSTITUTE IN SECOND EQUATION
5x-2y=9
5x-2(-2)=9
5x+4=9
-4 -4
5x=5
/5
x=1
------------------
0x+1y=2...................(1)
5x-2y=9....................(2)
multiply eq.(1) by -2
we get
0+2y=-4
5x-2y=9
add up
5x=5
/5
x=1
y=2