Answer:
You add common factors
Step-by-step explanation:
-3x^3 is the only x^3
5x^2 and -6x^2 can be added to get -x^2
4x and 2x can be added to get 6x
-7 and -3 can be added to get -10
the answer is -3x^3-x^2+6x-10
Let van =v and bus=b
V+6B=324
9V+3B=264×2 this will become
18V+6B=528 minus equ 1 from equ 2
-17V=-204 divide both side by -17
V=-204/-17=12
if V is 12 put it in equ 1
12+6B=324,6B=324-12=312 divide both side by 6
B=312/6=52
therefore the van and bus will take 12 and 52 persons respectively
