anonymous
  • anonymous
x-10y=-3 & 7y-4x=-21. Please show me to find an ordered pair.
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!
amistre64
  • amistre64
you want a solution to both equations right?
amistre64
  • amistre64
in other words, these are two lines the cross at one point... and find that point right?
amistre64
  • amistre64
ill show you the elimination method. we start by stacking them on top of each other and we are going to "eliminate" one of the variables.... its cruel I know, but its gotta be done :) -4x +7y =-21 x -10y =-3 <- mulitiply this one by (4) -4x +7y =-21 4x -40y =-12 ; now add the columns together -------------- 0 -33y = -33 ^ see what happened here? we eliminated the "x"s now we can solve this for "y"

Looking for something else?

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

More answers

amistre64
  • amistre64
-33y = -33 ; divide both sides by -33 to get: -33y/-33 = -33/-33 ; anything over itself = 1 y = 1 Since we know a "solid" value for "y"; plug it into any of the equations and solve for the "x"
amistre64
  • amistre64
x -10y =-3 x -10(1) = -3 x - 10 = -3 ; add 10 to both sides x -10+10 = -3+10 x-0 = 7 x = 7 your ordered pair is (7,1)
anonymous
  • anonymous
I wll have to look at this. This is something they do not show us in our books. Thank you very much.
amistre64
  • amistre64
youre welcome...
anonymous
  • anonymous
I have some more problems like thisand will use this to see how it works out. Again Thank you.

Looking for something else?

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