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 second equation is substituted into the first equation.

4x – 3y = –6
–x – 5y = –9

A.4x – 3(–5y + 9) = –6
B.4(–5y + 9) – 3y = –6
C.4x – 3(5y – 9) = –6
D.4(5y – 9) – 3y = –6

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 second equation is substituted into the first equation.

4x – 3y = –6
–x – 5y = –9

A.4x – 3(–5y + 9) = –6
		B.4(–5y + 9) – 3y = –6
		C.4x – 3(5y – 9) = –6
		D.4(5y – 9) – 3y = –6

anonymous · Answer

-x=5y-9
x=-5y+9
4(-5y+9) -3y=-6, B

anonymous · Answer

-x-5y=-9
Add -5y to get -x=5y-9
Divide both side by -1
x=9-5y
Substitute in the x into the first equation to get 
4(9-5y)-3y=-6
Which is equivalent to answer B