If you were to use the substitution method to solve the following system, choose the new equation after the expression equivalent to y from the second equation is substituted into the first equation.
2x - 5y = -3
6x - 3y = -3 (4 points)
Question 8 answers

2(2x + 1) - 5y = -3

2(-2x - 1) - 5y = -3

2x - 5(2x + 1) = -3

2x - 5(-2x - 1) = -3

Question

If you were to use the substitution method to solve the following system, choose the new equation after the expression equivalent to y from the second equation is substituted into the first equation.
2x - 5y = -3
6x - 3y = -3 (4 points)
 Question 8 answers
		
2(2x + 1) - 5y = -3
 		
2(-2x - 1) - 5y = -3
 		
2x - 5(2x + 1) = -3
 		
2x - 5(-2x - 1) = -3

anonymous · Answer

First use the second equation and solve for y. 
6x-3y=-3
-3y=-3-6x
$$y=\frac{ -3-6x }{ -3 }$$
y=1+2x or y=2x+1
Now insert your new answer for y in the first equation.
2x-5(2x+1)=-3

anonymous · Answer

Does that make sense?