anonymous
  • anonymous
solve by substitution method 4x+2y=-20, x=25-8y
Mathematics
  • Stacey Warren - Expert brainly.com
Hey! We 've verified this expert answer for you, click below to unlock the details :)
SOLVED
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.
katieb
  • katieb
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
4x+2y=-20 Plug in 25-8y for x in the original equation 4(25-8y)+2y=-20 get rid of the parenthesis 100-32y+2y=-20 combine like terms 100-30y=-20 subtract 100 from both sides -30y=-120 divide each side by -30 to get y alone y=4
anonymous
  • anonymous
Now that you know what y is go ahead and go back to the original problem and plug in 4 for y to find what x is.
anonymous
  • anonymous
4x+2y=-20 4x+2(4)=-20 4x+8=-20 4x=-28 x=-7 x=-7 and y=4

Looking for something else?

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

More answers

anonymous
  • anonymous
does that make sense?
anonymous
  • anonymous
yes thank you, i didnt know what do to after the -30 thank you
anonymous
  • anonymous
No problem just wanted to make sure you understood it:) Let me know if you need anymore help! :)

Looking for something else?

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