SOLUTION: what is the solution for the following system of linear equations? X+6Y=-4 3X-4Y=10

Algebra ->  Linear-equations -> SOLUTION: what is the solution for the following system of linear equations? X+6Y=-4 3X-4Y=10      Log On


   

Question 229018: what is the solution for the following system of linear equations?
X+6Y=-4
3X-4Y=10
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
X+6Y=-4 MULTIPLY THIS EQUATION BY -3 7 ADD,
3X-4Y=10
-3X-18Y=12
-----------------
-22Y=22
Y=22/-22
Y=-1 ANS.
X+6*-1=-4
X-6=-4
X=-4+6
X=2 ANS.
PROOF:
3*2-4*-1=10
6+4=10
10=10
-----------------------------
THE ANSWER IS (2,-1) NORMALLY THESE TERMS ARE PRESENTED AS (X,Y)