Solve for the variable: -15r – 8 = 37
a. -5
b. -3
c. -2
d. 3

 [B]:  -3 .

Explanation:

Given:

  "  -15r – 8 = 37 " ;   Solve for " r "  ;

     →  Add  "8" to each side of the equation ; 

     →  -15r – 8 + 8 = 37 + 8 ; 

to get:

     →  -15r  =  45 ;

     → Divide EACH side of the equation by "-15" ; to isolate the variable, "r", on one side of the equation; and to solve for, "r" ; 

     →  -15r / -15  =  45 / -15 ;

          →   r  =  - 3  ; which is our answer; 

          →   which is:  Answer choice:  [B]:  "-3" .