Solve the system by adding or subtracting x - 2y = - 13 5 x + 2y = - 17

use the combination method

Step-by-step explanation:

x - 2y = - 13

+ 5 x + 2y = - 17

since 2y is in both equations you cancel them out.

5x + x = 6x

-2y + 2y = 0

-13 + (-17) = - 30

put it back into the equation

6x + 0 = - 30 or 6x = - 30

6x : 6 = x

-30 : 6 = - 5

x = - 5

then plug into the equation x - 2y = - 13 and 5x + 2y = - 17

-5 - 2y = - 13

-13 + 5 = - 8

-2y = - 8

y = 4

x = - 5 and y = 4

You subtract and find x=10