Question

$- 3(2 + x) - 4(x + 4) = - 5x - 16$
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Answer 1

Resposta:

$- 3(2 + x) - 4(x + 4) = - 5x - 16 \\ - 6 + ( - 3x) - 4x + ( - 16) = - 5x - 16 \\ - 3x - 4x - 6 - 16 = - 5x - 16 \\ - 7x - 22 = - 5x - 16 \\ - 7x + 5x = - 16 + 22 \\ - 2x = 6 \\ x = 6 \div 2 \\ x = 3$

Answer 2

Boa noite!

$-3(2+x)-4(x+4)=-5x-16$

$-(6+3x)-(4x-16)=-5x-16$

$-6-3x-4x+16=-5x-16$

$-3x-4x+5x=-16-16+6$

$-7x+5x=-32+6$

$-2x=-26$

$2x=26$

$x=26/2$

$x=13$

Espero ter ajudado :D