I think the answer to the property of complex numbers is demonstrated below is Commutative Property of Addition. Option number 4 is correct.
Well this problem can be solved with Algebra
the rule here is that for every incrementing sequence you increase your number by 6.
T(n)=18+6(n-1)
for 603 to be in the sequence, it has to male sense with the function above
603=18+6(n-1)
603-18=585
585=6(n-1)
n-1=(585/6)
n=(585+6)/6
n=591/6
here is your answer.
The answer is 12. you first divide 20 by 4 and get 5. then you subtract 5 by 5 and get 0. then you add 12 plus 0 and get 12
Hope I Helped :D
4x +9
3x and x are like terms
And 2 and 7 are like terms
Hope this helps :D