SOLUTION: y=5x-7 -3x-2y=-12

Algebra ->  Expressions-with-variables -> SOLUTION: y=5x-7 -3x-2y=-12       Log On


   



Question 1131001: y=5x-7 -3x-2y=-12

Found 2 solutions by MathLover1, Alan3354:
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!

y=5x-7.......eq.1
+-3x-2y=-12.......eq.2
-----------------------------
+-3x-2y=-12.......eq.2....substitute y from eq.1
+-3x-2%285x-7%29=-12.......solve for x
+-3x-10x%2B14=-12
+-13x%2B14=-12
+12%2B14=13x
+26=13x
+x=26%2F13
+x=2
go to
y=5x-7.......eq.1 ...substitute x=2
y=5%2A2-7
y=10-7
y=3


+graph%28+600%2C+600%2C+-10%2C+10%2C+-10%2C+10%2C+5x-7%2C+-3x%2F2%2B6%29+

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
y=5x-7 -3x-2y=-12
--------
You didn't ask a question, or make a request.
--
If you want to solve for x & y, sub for y in the 2nd equation.