Question

02 – Qual é o valor de x, no conjunto IR, na expressão
a) 6 b) 18 c) 2 d) 3
(3 + x) – 1 = (17 – 4x) – (3 + x) ?

(ME AJUDEM PFVR, VOU COLOCAR COMO MELHOR RESPOSTA “

Answer 1

$\large\boxed{\begin{array}{l}\rm Qual\,\acute e\,o\,valor\,de\,x,no\,conjunto\,\mathbb{R},\\\rm na\,express\tilde ao\\\rm (3+x)-1=(17-4x)-(3+x) ?\\\rm a)~6\\\rm b)~18\\\rm c)~2\blacksquare\\\rm d)~3\end{array}}$

$\large\boxed{\begin{array}{l}\underline{\boldsymbol{soluc_{\!\!,}\tilde ao\!:}}\\\sf (3+x)-1=(17-4x)-(3+x)\\\sf 3+x-1=17-4x-3-x\\\sf x+4x+x=17-3-3+1\\\sf 6x=12\\\sf x=\dfrac{12}{6}\\\\\sf x=2\end{array}}$