PLEASE HELP ME ANSWER THIS

an= a0+(n-1)d

where a0=first term= 2

n=no.of terms

d= difference= -3

put values acc to ques in above formula

Yes, it is

-When you're simplify 18/21 , You will devided both denominator and numerator by 3 . Which means : =

-For example, when you got the answer, you should make the fraction to the SIMPLIEST FORM .

HOPE IT HELPS ^^