SOLUTION: Solve for x or y and make the system equal to each other and solve: 2x+y=7 3x-y+3 x-2y+1 x+4y=7 I am not just looking for the answers - but rather how you get to the a

Algebra ->  Coordinate-system -> SOLUTION: Solve for x or y and make the system equal to each other and solve: 2x+y=7 3x-y+3 x-2y+1 x+4y=7 I am not just looking for the answers - but rather how you get to the a      Log On


   

Question 312545: Solve for x or y and make the system equal to each other and solve:
2x+y=7
3x-y+3

x-2y+1
x+4y=7
I am not just looking for the answers - but rather how you get to the answers.

Solve using the substitution method
4x-y=7
5x-8y=2

x=5-y
2x+7y=0
Answer by JBarnum(2146) About Me  (Show Source):
You can put this solution on YOUR website!
um your first 2 sets of systems dont all have an equation please make sure u write the correct symbols 3x-y+3 and x-2y+1 ??
Solve using the substitution method
4x-y=7 : -y=7-4x : y=-7%2B4x
5x-8y=2 : -8y=2-5x : y=-%282-5x%29%2F8
%28-2%2B5x%29%2F8=-7%2B4x
%28-2%2B5x%29=-56%2B32x
%2854%2B5x%29=32x
54=27x
2=x
y=-7%2B4%282%29
y=1
x=5-y
2x+7y=0 : 2x=-7y : x=%28-7%2F2%29y
5-y=%28-7%2F2%29y
10-2y=-7y
10%2B5y=0
5y=-10
y=-2
x=5-%28-2%29
x=7