Answer :
Lets substitute for each variable, then solve:-
x = 13.2
y = 4.3
x = 13.2
-13.2 - 2y
y = 4.3
-x - 2 · 4.3
Lets solve:-
-13.2 - 2 × 4.3
-13.2 - (2 × 4.3)
-13.2 - 8.6
-21.8
So, when x = 13.2 and y = 4.3, -x - 2y = -21.8
Hope I helped ya!! xD
x = 13.2
y = 4.3
x = 13.2
-13.2 - 2y
y = 4.3
-x - 2 · 4.3
Lets solve:-
-13.2 - 2 × 4.3
-13.2 - (2 × 4.3)
-13.2 - 8.6
-21.8
So, when x = 13.2 and y = 4.3, -x - 2y = -21.8
Hope I helped ya!! xD