Respuesta :

Exvited
[tex] \frac{5}{9} (8 + c) = -20 \\ \\ \frac{5(8 + c)}{9} = -20 \\ \\ 5(8 + c) = -20 \times 9 \\ \\ 5(8 + c) = -180 \\ \\ 8 + c = - \frac{180}{5} \\ \\ 8 + c = -36 \\ \\ c = -36 - 8 \\ \\ c = -44 \\ \\ Answer: \fbox {c = -44} [/tex]
Billymkhoi
5/9(8+c)= -20
⇒ 40/9+ 5/9c= -20
⇒ 5/9c= -20 -40/9
⇒ 5/9c= -24 4/9
⇒ c= -24 4/9/(5/9)
⇒ c= -44

Final answer: c= -44~