a(9+3:2)−(3a−2a)(a+1) a=1 pls help
(1) ( 9 + 3/2 ) - (3(1) - 2(1)) ( 1 + 1) =
( 21/2) - ( 3 - 2) (2) =
(21/2) - (1) (2) =
21/2 - 2 =
21/2 - 4/2 =
17/2
thxx