HELP PLEASEEEEEE ANYONE

Question

jordanloveangel · Answer

Solve, using the substitution method.

y – 3x = 7
21 + 9x = 3y
 
 A.
There is no solution.
 
 B.
There are an infinite number of solutions.
 
 C.
The solution is (1, 10)
 
 D.
The solution is (28, 0)
  A?

anonymous · Answer

Do you want me to work it out with you? Or just give you the answer?

anonymous · Answer

A.there is no solution

anonymous · Answer

It would be A

peterg2001 · Answer

http://openstudy.com/study#/updates/52af2b81e4b0b09acc80313a

peterg2001 · Answer

http://openstudy.com/study#/updates/523a7e08e4b0fbf3cc7ae850

jordanloveangel · Answer

show me how 2 work it out

jordanloveangel · Answer

@SapphireSkye16 can u show me how u got the answer

anonymous · Answer

there is no solution

anonymous · Answer

Yea. So you have to get the "y" alone in the first equation so you add the "3x" to both sides. It'll cancel it out on the left side but add it to the right side so it should look like this: $$y=3x+7$$

anonymous · Answer

Then you plug that into the "y" of the second equation and you get: $$21+9x=3(3x+7)$$

anonymous · Answer

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