Question

Y= -1
-2x-y=3
Solve by substitution

Answer 1

i think it might be 3.

Answer 2

x = -1
(work)
-2x - (-1) = 3
-2x + 1 = 3
-1 -1
-2x = 2
÷ -2 ÷ -2
x = -1
Hope this helps!