Question

Solve the system:
3x + 4y = -33
-2x + 4y = -18

Answer 1

use elimination:
multiply -1 to the 2nd equation to eliminate the 4 or you can just subtract the 4...to remove Y

Answer 2

OR you can use substititution...

Answer 3

elimination is easy to use here...
when you remove y, you 5x=-15...
solve for x, after you find x, sub in x in one of the two formulas

Answer 4

x=-3

Answer 5

yes

Answer 6

ok can you show me how to find the Y now plz?

Answer 7

you found x=-3 substitute x=-3 in any of the two formulas..(you can use either equation 1 or 2)to get y.

Answer 8

y=-6?

Answer 9

correct! did you get it?

Answer 10

yes

Answer 11

thank u