3x + 9y = -42 -3x + 2y = -2 To solve this system by elimination, blank the equations.

Mathematics · Middle School · Tue Nov 03 2020

Answered on

Here, we have

3x + 9y = -42       ….(1)

 -3x + 2y = -2       ….(2)

Using elimination method,

Adding equation 1 and 2, we get

3x + 9y - 3x + 2y = -42 - 2

11y = -44

y = -44/11

y = -4

Now, putting value of y in equation 2, we get

-3x + 2(-4) = -2

-3x -8 = -2

-3x = -2 + 8

-3x = 6

x = 6/-3

x = -2

 

Thus, value of x and y are -2 and -4 respectively.