Answer:
-(a + 3)
Step-by-step explanation:
5a - 2b -3 + 2b - 6a
5a - 6a - 2b + 2b - 3
-a - 3
simplify the expression into like terms
so 5a-2b-3+2b-6a (add all a and b together)
this will make
-a-3
I know how to do the equivalent sorry :(
i think E.942 cm³ is answer
Volume = πr²h
so
3.14×5×5×12
= 942 cm²