Question

need help solving with elimination method.
y=4x-1
y=2/3x-1

Answer 1

subtract first and second equation!!

Answer 2

@channie2003 do it and you will get x !

Answer 3

thank you im just starting a new class and trying to get back into how to do these things I am extremely horrible at math. I get confuse very easy

Answer 4

Practice makes perfect :)

Answer 5

every warrior was once a crying baby :P

Answer 6

y = 4x - 1
y = 2/3x - 1
------------
Lets get rid of the fraction in the second equation by multiplying it by 3

(3)y = (3)2/3x - (3)1
3y = 2x - 3

Now your problem reads....
y = 4x - 1
3y = 2x - 3---> (-2)3y = (-2)2x - (-2)3
--------------
y = 4x - 1
-6x = -4x + 6 (result of multiplying by -2)
-------------add
-5y = 5 (as you can see, the 4x's cancel each other out)
-5y/-5 = 5/-5 (divide by -5 to get x by itself)
y = -1

now sub -1 into either of the first two equations to find x.
y = 4x - 1
-1 = 4x - 1
-1 + 1 = 4x -1 + 1 (add 1 to both sides to get 4x by itself)
0 = 4x
0/4 = x
0 = x

check....
y = 4x - 1
-1 = 4(0) -1
-1 = -1 (correct)

y = 2/3x - 1
-1 = 2/3(0) - 1
-1 = -1 (correct)

ANSWER : x = 0, y = -1