how do I solve a three equation problem using elimanation.
-5x+8y+3z=122
7x-2y-12z=-783
-8x-9y-10z=15 ?
I just want to know how to solve step by step -_-

Question

pooja195 · Answer

ok look at each problem and think which can be a possible answer for each of these

anonymous · Answer

okay do i work out the first two first , ?

anonymous · Answer

i think we get rib of the y's  the second one would have to add up to 8 as the top one ?

pooja195 · Answer

do u get it now

anonymous · Answer

kind of but i get a decimal or do i have to get a whole number

pooja195 · Answer

depends what the answer is

pooja195 · Answer

but u should get a whole

anonymous · Answer

okay for the last two to solve we get rid of y's with an 18 equaling to both ?