Question

4(-2d-3)=12

Answer 1

just multiply them
4(-2d-3) =12
-8d -12= 12
-8d =12 +12
-8d =24
d=- 24/8
d=-3 is yur correct answer

Answer 2

and if u want to check either yur question is correct or not then just put this value in the above equation
4(-2d-3)=12 since d =-3
-8d -12 =12
-8(-3) =12 +12
24 =24
if yur both values equal to eachother then it is correct and if not then incorrect

Answer 3

first distribute 4 over what is in the bracket ,that is multiply.
Then you make d the subject.