Write the correct number in the given boxes from the following A.P.
`-3,-8, -13, -18`,…..
Here, `t_(1) = square, t_(2) = square, t_(3)=square, t_(4)=square, t_(2)-t_(1) =square, t_(3)-t_(2)=square therefore a =square, d=square`

Answer

`t_(1) =-3, t_(2) = -8, t_(3)=-13, t_(4)=-18, t_(2)-t_(1) = -5, t_(3)-t_(2) = -5, therefore a=-3, d=-5`