[tex]\sf{2²x-¹=2³}[/tex]
[tex]\sf{ {2}^{2}x {}^{ - 1} = {2}^{3} \: ,x \: \neq0}[/tex]
[tex]\sf{x {}^{ - 1} = 2}[/tex]
[tex]\sf{ \frac{1}{x} = 2}[/tex]
[tex]\sf{1 = 2}x[/tex]
[tex]\sf{1= 2x} = 2x = 1[/tex]
[tex]\sf{2x = 1}[/tex]
[tex]\sf{1 \div 2 = \frac{1}{2} }[/tex]
[tex]\sf{x = \frac{1}{2} , \: x \: \neq0}[/tex]
[tex]\boxed{\boxed{{\sf{x = \frac{1}{2} }}}}[/tex]
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[tex]\sf{segue \:\: abaixo \: a \: resposta}[/tex]
[tex]\sf{2²x-¹=2³}[/tex]
[tex]\sf{ {2}^{2}x {}^{ - 1} = {2}^{3} \: ,x \: \neq0}[/tex]
[tex]\sf{x {}^{ - 1} = 2}[/tex]
[tex]\sf{ \frac{1}{x} = 2}[/tex]
[tex]\sf{1 = 2}x[/tex]
[tex]\sf{1= 2x} = 2x = 1[/tex]
[tex]\sf{2x = 1}[/tex]
[tex]\sf{1 \div 2 = \frac{1}{2} }[/tex]
[tex]\sf{x = \frac{1}{2} , \: x \: \neq0}[/tex]
[tex]\boxed{\boxed{{\sf{x = \frac{1}{2} }}}}[/tex]