Question

resolva as equações de primeiro grau x+4=12-9x

Answer 1

Resposta:

x + 4 =12 - 9x

x + 9x =12 -4

10x = 8

x =8/10 = 0,8

Answer 2

$x+4=12-9x$

$x+9x=12-4$

$10x=8$

$x=\frac{4}{5}$

$x=0,8$

$\boxed{\boxed{\boxed{\boxed{x=0,8}}}}$