Question

Resolva a equação de primeiro grau 3 x + 4 + 2x = 7 x + 20

Answer 1

Resposta:

5x + 4= 7x +20

5x-7x= 20-4

-2x= 16

x= -16/2

x= -8

Answer 2

Resposta:

$3 x + 4 + 2x = 7 x + 20$

$5x+4=7x+20$

$5x-7x=20-4$

$-2x=16$

$x=-\frac{16}{2}$

$x=-8$

$\boxed{\boxed{\boxed{\boxed{x=-8}}}}$