Question

(solve for the system of equations)
-7x-3y=-1
9x+5y=7

Answer 1

Matrix?
Solve for augment matrix!!

Answer 2

-7 -3 -1
9 5 7

Answer 3

im not working with matrix

Answer 4

Oop sorry then solve by substitution?

Answer 5

thats the problem i don't remember how):

Answer 6

Just solve for x on each one first. Like this:
-7x-3y=-1
-7x =-1+3y ---I added 3y to both sides
x =1/7-3y/7 ---Divided -7 to both sides.

Answer 7

And then after you do it for the second equation we can susbtitue x from both equations and then we only have to solve for y

Answer 8

9x+5y=7
x =7/9-5y/9

Answer 9

x =1/7-3y/7
x =7/9-5y/9

7/9-5y/9 =1/7-3y/7
Solve for y now.


After you find y plug it back in to one of the original equations again and solve for x.

Answer 10

ok thanks man(: