Question

10(x+1)-5(x-2)=7
$10(x + 1) - 5(x - 2)$
​

Answer 1

Veja a resolução abaixo ⇩

$\boxed{\begin{array}{lr}10(x + 1) - 5(x - 2) = 7 \\ \\ 10x + 10 - 5(x - 2) = 7 \\ \\ 10x + 10 - 5x + 10 = 10 \\ \\ \: \: \: \: \: \: \: \: \: 5x + 10 + 10 = 7 \\ \\ \: \: \: \: \: \: \: \: \: \: \: \: \: 5x + 20 = 7 \\ \\ \: \: \: \: \: \: \: \: \: \: \: \: \: 5x = 7 - 20 \\ \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: 5x = - 13 \\ \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \boxed{\boxed{\red { x = - \frac{13}{5} }}} {\green{ \: ⇒resposta✓}}\end{array}}$

$\boxed{\begin{array}{lr}10(x + 1) - 5(x - 2) \\ \\ 10x + 10 - 5(x - 2) \\ \\ 10x + 10 - 5x + 10 \\ \\ \: \: \: \: \: 5x + 10 + 10 \\ \\ \: \: \: \: \: \: \: \boxed{\boxed{\red { 5x + 20 }}} {\green{ \: ⇒resposta✓}}\end{array}}$

Espero ter colaborado, bons estudos❤.