Question

−

Answer 1

Answer:

r = 3

Step-by-step explanation:

− 3 ( 6 r + 2 ) + 5 ( r + 1 ) = − 40

- 18r - 6 + 5 ( r + 1 ) = - 40

- 18r - 6 + 5r + 5 = - 40

-13r - 1 = - 40

-13r = - 39

r = 3