SOLUTION: The solution to the system of linear equations below is the point (x, y). State the value of x. (Enter an exact number.) x + 2y = 18 −3x + 2y = 10

Algebra ->  Coordinate Systems and Linear Equations  -> Lessons  -> Linear Equations Lesson -> SOLUTION: The solution to the system of linear equations below is the point (x, y). State the value of x. (Enter an exact number.) x + 2y = 18 −3x + 2y = 10      Log On


   

Question 1179681: The solution to the system of linear equations below is the point (x, y). State the value of x. (Enter an exact number.)
x + 2y = 18
−3x + 2y = 10
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!

x+%2B+2y+=+18.......eq.1
-3x+%2B+2y+=+10.......eq.2
----------------------------------subtract
x+%2B+2y+-%28-3x+%2B+2y+%29=+18-10
x+%2B+2y+%2B3x+-+2y+=+8
4x+=+8
x+=+2

go to
x+%2B+2y+=+18.......eq.1, substitute x
2+%2B+2y+=+18
2y+=+18-2

2y+=+16
y+=+8

The solution to the system of linear equations below is the point (2, 8).