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 + 5y = 1
2x + 4y = –4

a) 2(5y – 1) + 4y = –4

b)2(–5y + 1) + 4y = –4

c) 2x + 4(–5y + 1) = –4

d)2x + 4(5y – 1) = –4

Question

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 + 5y = 1
2x + 4y = –4 

a) 2(5y – 1) + 4y = –4 

 b)2(–5y + 1) + 4y = –4 

c) 2x + 4(–5y + 1) = –4 

 d)2x + 4(5y – 1) = –4

anonymous · Answer

Solve for x:

$$-x+5y=1$$
$$-x=-5y+1$$
$$x=5y-1$$

Substitute this into your other equation (in place of x) and see if you see the answer showing?  Got it?  ^_^