SOLUTION: Solve the system of equations by the elimination method. (If the system is dependent, let y = c and enter a general solution in terms of c. If there is no solution, enter NO SOLUTI

Algebra ->  Inequalities -> SOLUTION: Solve the system of equations by the elimination method. (If the system is dependent, let y = c and enter a general solution in terms of c. If there is no solution, enter NO SOLUTI      Log On


   

Question 1130339: Solve the system of equations by the elimination method. (If the system is dependent, let y = c and enter a general solution in terms of c. If there is no solution, enter NO SOLUTION.)
{3x− y= 9
4x+ 3y= −1
(x, y) =
Answer by MathLover1(20849) About Me  (Show Source):
You can put this solution on YOUR website!
3x-y=+9....eq.1-> both sides multiply by 3
4x%2B+3y=+-1.......eq.2
--------------------------------
9x-3y=+27....eq.1
4x%2B+3y=+-1.......eq.2
--------------------------------add
9x-3y%2B4x%2B+3y=+27%2B%28-1%29
9x-+cross%283y%29%2B4x%2B+cross%283y%29=+26
13x=+26
x=+26%2F13
x=+2

3x-+y=+9....eq.1-...plug in x=+2
3%2A2-+y=+9
6-+9=+y
y=-+3

solution:
(x, y) =(2,-3)