by using system of equation substitution x=3y, x+2y=10

Question

i need help trying to figure this out.

 

Answer 1

X=3y

X+2y=10

 

First, since x=3y we can substitute it in the x+2y=10 like this

 

(3y)+2y=10

5y=10

Y=2

 

Now plug the y into x=3y

 

X=3(2)

X=6

 

So your answer is x=6, y=2