SOLUTION: 1) x+y=9 x+2y=13 x= y= 2) 3x+7y= 24 9x+5y=24 x= y= 3) 4x+y=17 2x+3y+21 x= y= 4) 18x+y=42 6x-3y=-6 x= y= 5) x+y+2z=5 x+y=5 x+3y+z=11 x= y= z= 6) x+10y+

Algebra ->  Coordinate Systems and Linear Equations -> SOLUTION: 1) x+y=9 x+2y=13 x= y= 2) 3x+7y= 24 9x+5y=24 x= y= 3) 4x+y=17 2x+3y+21 x= y= 4) 18x+y=42 6x-3y=-6 x= y= 5) x+y+2z=5 x+y=5 x+3y+z=11 x= y= z= 6) x+10y+      Log On


   

Question 369018: 1) x+y=9 x+2y=13 x= y=
2) 3x+7y= 24 9x+5y=24 x= y=
3) 4x+y=17 2x+3y+21 x= y=
4) 18x+y=42 6x-3y=-6 x= y=
5) x+y+2z=5 x+y=5 x+3y+z=11 x= y= z=
6) x+10y+z=52 5x+y+4z=15 x+2y-3z=12 x= y= z=
7) 2x+2y+4z=10 3x+3y=15 4x+12y+4z=44 x= y= z=
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
List each problem separately.
Where are you having problems solving the systems??
Also include partial work.
You're more likely to receive a response.
1.x%2By=9
2.x%2B2y=13
Subtract eq. 1 from eq. 2,
x%2B2y-x-y=13-9
highlight%28y=4%29
Now use either equation to solve for x.