Question

raiz quadrada de 3 x + 7 = 4
$\sqrt{3x + 7 = 4}$
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Answer 1

Resposta:

$x = 3$

Explicação passo a passo:

$\sqrt{3x+7} =4\\\\(\sqrt{3x+7})^{2} =4^{2} \\\\3x+7=16\\\\3x=16-7\\\\3x=9\\\\x=\frac{9}{3} \\\\x=3$