Question

SOLVE: 3x - 2y = 9 and -3x + 2y = -9 Using elimination

Answer 1

multiply equation 1by -1 and add both

Answer 2

Hmm....

That would give you

-3x + 2y = -9
-3x + 2y = -9
-----------------
-9x + 4y = -18

Then you can alter the second equation to be 9x - 6y = 27 by multiplying equation (-3x +2y = -9) by (-3)

-9x + 4y = -18
9x - 6y = +27
------------------
0x - 2y = 9

-2y = 9

y = -9/2

Substitute y into one of two equations to solve for x.

Answer 3

lol i meant multiply 2nd equation by -1

Answer 4

-4y=18
y=-9/2 directly

Answer 5

:P

Answer 6

Either method works xD

Answer 7

yup