Me i don’t know what the answer is

The linear combination method is applied to a system of equations as shown. 4(.25x + .5y = 3.75) → x + 2y = 15 (4x – 8y = 12) → x – 2y = 3 2x = 18 what is the solution of the system of equations? (1,2) (3,9) (5,5) (9,3)

Find the value of x. give reasons to justify your solutions! l, m ∈ kn

Plz hurry evaluate the expression a+b where a=8 and b=19