SOLUTION: Can you help solving the following using either the substution method or the elimination method? 2(x-y)=3+x,x=3y+4

Algebra ->  Coordinate Systems and Linear Equations -> SOLUTION: Can you help solving the following using either the substution method or the elimination method? 2(x-y)=3+x,x=3y+4      Log On


   

Question 335521: Can you help solving the following using either the substution method or the elimination method? 2(x-y)=3+x,x=3y+4
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
1.+2%28x-y%29=3%2Bx
2.x=3y%2B4
Substitute eq. 2 into eq. 1,
2%283y%2B4-y%29=3%2B3y%2B4
2%282y%2B4%29=3y%2B7
4y%2B8=3y%2B7
highlight%28y=-1%29
Then use eq. 2,
x=3%28-1%29%2B4
highlight%28x=1%29