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a)
[tex]\Box \ \ \boxed{\begin{array}{l}\sf -36x=12 \ ? \end{array}}\\\\\\\\\Box \ \ \boxed{\begin{array}{l}\sf 36x=-12 \end{array}}\\\Box \ \ \boxed{\begin{array}{l}\sf x=\frac{-12}{36} \ \ \checkmark \end{array}}\\\\[/tex]
resposta correta;
[tex]x=\frac{-12}{36}[/tex]
ou
-0.333,333,333,33
b)
[tex]\Box \ \ \boxed{\begin{array}{l}\sf -x=3 \ ? \end{array}}\\\\\\\Box \ \ \boxed{\begin{array}{l}\sf x=-3 \ \ \checkmark \end{array}}\\[/tex]
resposta correta;
x=-3
c)
[tex]\Box \ \ \boxed{\begin{array}{l}\sf -7x=-14 \ ? \end{array}}\\\\\\\Box \ \ \boxed{\begin{array}{l}\sf 7x=14 \end{array}}\\\Box \ \ \boxed{\begin{array}{l}\sf x=\frac{14}{7} \ \checkmark \end{array}}\\\Box \ \ \boxed{\begin{array}{l}\sf x=2 \ \checkmark \end{array}}[/tex]
resposta correta;
[tex]x=\frac{14}{7}[/tex]
ou
[tex]x=2[/tex]
prova real;
a)
[tex]\Box \ \ \boxed{\begin{array}{l}\sf -36x=12 \end{array}}\\\Box \ \ \boxed{\begin{array}{l}\sf 35x=-12 \end{array}}\\\Box \ \ \boxed{\begin{array}{l}\sf 0.333,333,333,33 \ . \ 36=-12 \end{array}}\\\Box \ \ \boxed{\begin{array}{l}\sf 12=-12 \end{array}}\\\Box \ \ \boxed{\begin{array}{l}\sf \rightarrow \ =-12-12 \end{array}}\\\Box \ \ \boxed{\begin{array}{l}\sf \rightarrow \ =\boxed{\begin{array}{l}\sf 0 \ \checkmark\end{array}} \end{array}}[/tex]
[tex]b)\\\Box \ \ \boxed{\begin{array}{l}\sf -x=3 \end{array}}\\\Box \ \ \boxed{\begin{array}{l}\sf x=-3 \end{array}}\\\Box \ \ \boxed{\begin{array}{l}\sf -3=-3 \end{array}}\\\Box \ \ \boxed{\begin{array}{l}\sf \rightarrow \ =-3+3 \end{array}}\\\Box \ \ \boxed{\begin{array}{l}\sf \rightarrow \ = \boxed{\begin{array}{l}\sf 0 \ \checkmark\end{array}} \end{array}}[/tex]
[tex]c)\\\Box \ \ \boxed{\begin{array}{l}\sf -7x=-14 \end{array}}\\\Box \ \ \boxed{\begin{array}{l}\sf 7x=14 \end{array}}\\\Box \ \ \boxed{\begin{array}{l}\sf 2 \ . \ 7=14 \end{array}}\\\Box \ \ \boxed{\begin{array}{l}\sf 14=14 \end{array}}\\\Box \ \ \boxed{\begin{array}{l}\sf \rightarrow \ =14-14 \end{array}}\\\Box \ \ \boxed{\begin{array}{l}\sf \rightarrow \ =\boxed{\begin{array}{l}\sf 0 \ \checkmark \end{array}} \end{array}}[/tex]
respostas corretas [tex]\checkmark[/tex];
a)
[tex]x=\frac{14}{7}[/tex]
ou
-0.333,333,333,33
b)
x=-3
c)
[tex]x=\frac{14}{7}[/tex]
ou
x=2
[tex]\ \ \ \ \heartsuit\\|\underline{\overline{\mathcal{\boldsymbol{\LaTeX}}}}|[/tex]