Question

2
$2x + 4 = 16$
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Answer 1

    2x + 4 = 16 ⇔

⇔ 2x = 16 - 4 ⇔

⇔ 2x = 12 ⇔

⇔ x = 12/2 ⇔

⇔ x = 6

Answer 2

resolução!

2x + 4 = 16

2x = 16 - 4

2x = 12

X = 12/2

X = 6