what is value of x and y? x+12y=17,x-y=-9

Question

anonymous · Answer

x=-7,y=2 @Blu-Girl

nnesha · Answer

solve one equation for x or y and then plug the value into the other equation

michele_laino · Answer

Like before, please, try using the substitution method, for example:
$$x=-9+y$$
and substitute it in the first equation

nnesha · Answer

|dw:1415735679818:dw|
solve this equation for x by add y both side

anonymous · Answer

thx

anonymous · Answer

http://openstudy.com/updates/546268fee4b05b0e1f172220 fan+medal help attatchment and hope u help

anonymous · Answer

x=-8+y,-x-6y=29 , so from that one is should be able to figure what this is

anonymous · Answer

thts ok

jhannybean · Answer

use the elimination method since you have 2 equations.

x+12y = 17
     x-y =-9

If we eliminate one variable, it will be easy to solve for the other.

Lets multiply 12 to the second equation

x+ 12y = 17
12x -12y = -108

now we add whats remaining

13x +0y = -91

jhannybean · Answer

x= -91/13 = -7

-7 - y = -9

      -y = -9 + 7

        y = 2

anonymous · Answer

ok

anonymous · Answer

and how did u get x

jhannybean · Answer

After I eliminated y by multiplying my second equation by 12

jhannybean · Answer

Look up a few posts from this one, I explained how to do it there :)

anonymous · Answer

ok I will thx

jhannybean · Answer

13x = -91

    x =  -91/13

anonymous · Answer

ok thx

jhannybean · Answer

No problem :)

michele_laino · Answer

after the substitution which I have wrote, you can find y=2