Question

A variable needs to be eliminated to solve the system of equations below.

Answer 1

Answer:

The variable that needs to be eliminated in these systems of equations are 3x

Step-by-step explanation:

-3x + 4y = -50

3x + 3y = -6

*solve from top to bottom, if that makes sense, so add 3x to -3x, 4y to 3y, and -50 to -6.*

0 + 7y = -56

7y = -56

*divide by 7 to get y alone*

y = -8

plug y into one of the original equations to get x

-3x + 4y = -50

-3x + 4(-8) = -50

-3x - 32 = -50

     +32    +32

-3x = -18

x = 6