Question

resolva a inequaçao a segui:
10y-5(1-y) > 3(2y-2)-20

Answer 1

Olá Sarinha,

resolvendo a desigualdade:

$10y-5(1-y)>3(2y-2)-20\\ 10y-5+5y>6y-6-20\\ 15y-5>6y-26\\ 15y-6y>-26+5\\ 9y>-21\\\\ y>- \dfrac{21}{9}\\\\ y> -\dfrac{7}{3}\\\\\\ S=\left\{y\in~R~|~y>- \dfrac{7}{3}\right\}$

Espero ter ajudado e tenha ótimos estudos =))