The given expression is 3x + 5 - 12y
The given value of x and y are; x = -5 and y = 2
Substitute x = -5 and y = 2 in the given equation;
3x + 5 -12y
3(-5) + 5 - 12(2)
-15 + 5 -24
-10 - 24
-34
Therefore, 3x + 5 -12y = -34 when, x = -5 and y = 2
Answer : 3x + 5 -12y = -34