Question

Resolvendo-se a equação 2.(x+4)=4x+11, obtém-se: a)= -2,4 b)= -1,5 c) x=0,5 d) x=1,2

Answer 1

Resposta:

b)

Explicação passo-a-passo:

2.(x+4)=4x+11,

2x+8=4x+11

2x-4x=11-8

-2x=3    .(-1)

2x=-3

x= -3/2

x= -1,5

Answer 2

$\sf 2\cdot(X+4)=4x+11\\\\\\2x+8=4x+11\\\\\\{Subtrair\:}8{\:de\:ambos\:os\:lados}\\\\\\2x+8-8=4x+11-8\\\\\\2x=4x+3\\\\\\2x-4x=4x+3-4x\\\\\\-2x=3\\\\\\\dfrac{-2x}{-2}=\dfrac{3}{-2}\\\\\\\to \boxed{\sf x=-\frac{3}{2} \approx-1,5}$