a = 4 b= -5 c= -2 nilai (a+2b-3c) - (a-3b +2c) =.....

(a+2b-3c) - (a-3b +2c)
= (4 + 2(-5) - 3(-2)) - (4 - 3(-5) + 2(-2)
= (4 - 10 + 6) - (4 + 15 - 4)
= 0 - 15
= -15

(a + 2b- 3c) - ( a - 3b + 2c) =
(4 + 2(-5) - 3(-2) - (4 - 3(-5) +2(-2)=
4 - 10 +6 -4 - 15 + 4 =
- 6 + 2 - 11 =
-4 - 11 = - 15