SOLUTION: 3x-2y=9
-7x+y=12
Algebra.Com
Question 261610: 3x-2y=9
-7x+y=12
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
3x-2y=9
-7x+y=12
------------------------
Multiply thru the 2nd equation by 2:
3x - 2y = 9
-14x+2y = 24
------------------
Add the equations and solve for "x":
-11x = 33
x = -3
-------------------
Substitute into -7x+y = 12 and solve for"y":
-7x + y = 12
-7(-3) + y = 12
y = -9
========================
Cheers,
Stan H.
-------------------
RELATED QUESTIONS
3x-y=2... (answered by Alan3354)
how to solve 3x-y=9 and... (answered by checkley77)
3x – 2y = 12
7x + 2y = 8
(answered by Alan3354)
7x+2y=9
3x+8y=11
(answered by jim_thompson5910)
7x+y=20... (answered by checkley71)
y=3x-1... (answered by Fombitz)
3x+2y=11... (answered by Maths68)
6x-8-3x+5=7x-12+9 (answered by jim_thompson5910)
Solve by graphing
3x-2y=12... (answered by ewatrrr)