Question

resolvendo a equação 2(x+4)=4x+12,obtém: a)x= -2
b)x= -1,5
c)x= -0,5
d)x= 1,2​

Answer 1

Resposta:

$2(x+4)=4x+12\\\\2x+8=4x+12\\\\2x+8-8=4x+12-8\\\\2x=4x+4\\\\2x-4x=4x+4-4x\\\\-2x=4\\\\\frac{-2x}{-2}=\frac{4}{-2}\\\\x=-2$

Answer 2

OLÁ

$2(x + 4) = 4x + 12 \\ 2x + 8 = 4x + 12 \\ 2x - 4x + 8 = 12 \\ 2x - 4x = 12 - 8 \\ - 2x = 12 - 8 \\ - 2x = 4 \\ x = \frac{4}{ - 2} \\ \boxed{ \boxed{ \blue{x = - 2}}}$

letra A

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espero ter ajudado

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