Question

Determine whether the given ordered pair is a solution of the system.

(2,-1)
7x + 2y = 12
6x - 3y = 20

Answer 1

Not a solution of the system

Explanation:

Substitute 2 for x and -1 for y

`7(2)+2(-1)=12\\6(2)-3(-1)=20`

Simplify

`14-2=12\\12+3=20`

Simplify

`12=12\\15\\eq 20`