11(d-c)+3(c+d) when c=6 and d=9

Answer 1

11(d-c)+3(c+d) when c=6 and d=9
= 11(9-6) + 3(6+9)
= ....

Answer 2

11 ( d - c ) + 3 ( c + d ) =

11 d - 11 c + 3 c + 3 d =

14 d - 8 c

Just put your number in this equation.