SOLUTION: 3x+ 2y=-2 multiply this equation by -3 & add them 15x 6y=12 to get -9x-6y=6 ----------- ----------- ------ 6x=18 want to know how 6x-18 came about from -9x-6y=6 x=18/6

Question 186924: 3x+ 2y=-2 multiply this equation by -3 & add them
15x 6y=12
to get -9x-6y=6
------------------------------
6x=18 want to know how 6x-18 came about from -9x-6y=6
x=18/6
x=3 answer.

can anyone tell me how my book got 6x=18 from -9x-6y=6 ?

Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
3x + 2y =-2
15x+ 6y =12
Let's just do it and see
multiply the 1st equation by -3 & add them
-9x - 6y = +6
15x + 6y = 12
---------------adding eliminates y
+6x + 0y = 18
6x = 18
x =
x = 3
;
I don't see what the problem is here
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