anonymous
  • anonymous
solve my substitution (medal and fan) -x - y - z = -8 -4x + 4y + 5z = 7 2x + 2z = 4
Mathematics
jamiebookeater
  • jamiebookeater
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.

Get this expert

answer on brainly

SEE EXPERT ANSWER

Get your free account and access expert answers to this
and thousands of other questions

amoodarya
  • amoodarya
rewrite it -x - y - z = -8 -4x + 4y + 5z = 7 x + z = 2 from 3rd x=2-z so put in 1st and 2nd one
anonymous
  • anonymous
im still confused :(
amoodarya
  • amoodarya
i divided the 3rd equation by 2 so have x+y=4/2=2

Looking for something else?

Not the answer you are looking for? Search for more explanations.

More answers

amoodarya
  • amoodarya
let start from the begining -x - y - z = -8 -4x + 4y + 5z = 7 x + z = 2 from 1st equation -x-y-z=-8 -x=-8+y+z so multiply by -1 x=8-y-z
amoodarya
  • amoodarya
put x=8-y-z in other equations -4x + 4y + 5z = 7 x + z = 2
amoodarya
  • amoodarya
-4(8-y-z) + 4y + 5z = 7 (8-y-z)+ z = 2
amoodarya
  • amoodarya
can you go on ?
amoodarya
  • amoodarya
-4(8-y-z) + 4y + 5z = 7 (8-y-z)+ z = 2 --->8-y=2 --->y=6 put that in above
anonymous
  • anonymous
yeah! thankss

Looking for something else?

Not the answer you are looking for? Search for more explanations.