Plz with this and expalin how 2 do it

Hey there :)

Solving by elimination is also known as solving simultaneously.

(equation 1)    x - 5y = 19
(equation 2) - x + 3y = - 11

Add them together

       x - 5y = 19
+ ( - x + 3y = - 11 )

- 5y + 3y = 19 - 11
- 2y = 8

Divide by - 2 on either side to isolate y

y = - 4

Now you know the value of y, so you can substitute to find x
( You can use either equation, you will have the same answer )

x - 5 ( - 4 ) = 19
x + 20 = 19
x = 19 - 20
x = - 1

Since they want it in the ordered pair format, you should give it in ( x , y ) format

Your answer will be:
( - 1 , - 4 )

How many is in each case if there is 12 in each case it would be 40