If you were to use the substitution method to solve the following system, choose the new equation after the expression equivalent to x from the first equation is substituted into the second equation. x – 6y = –15 x – 3y = –3

Question

anonymous · Answer

Equation 1: x-6y=-15 
Solving for x yields:
                 x=-15+6y (we added +6y to both left and right hand sides)
Now if we substitute this into 
Equation 2: x-3y=-3 you have
                 (-15+6y) -3y=-3  (because x=-15+6y
      Simplifying, you get
                  -15+3y=-3 can you take it from here?